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design guide ps 23
215.721.1721
VULCAN SPRINGS WORK!
DESIGN
GUIDE FOR CONSTANT FORCE, CONSTANT TORQUE,
CONPOWER® POWER, MOTOR BRUSH AND TWIN SPRINGS
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Conpower®
Power Springs
Conforce®
Constant ForceSprings
Contorque®
Constant TorqueSprings
Motor Brush
Twin Springs
Pr-tr owr r
ar rvr wo o to
a arbor a clo
a ca to crat a comact
owr orc. Th q
cotrco rov a
hh mbr of tr wth
a low torq rat. It
rov rotaoal ryfrom thr th arbor or
th ca. It ca alo rov
lar moo wth th
of a lly or cabl.
Cotat forc r
or hh forc ott
wth vry mall ac
rqrmt, mak
thm al for a w
varty of alcao
whr cotat forc
. Abl to tor
owr tly whxt, Coforc®
r rov lo
lar rach wthot
forc bl. Varabl
forc r ar alo
avalabl.
Cotat torq r
rov hh amot of
torq a mall acka.
Bca of thr q
, Cotorq® r
allow mro tr
wthot a cha forc.
Th mooth roll aco
of Cotorq® r al for cabl xto
a rov a altrav
to bary motor or a
wht.
Whthr l or
tw brh r ar
rqr, motor brh
r ar th al
mtho of r
cott, abl
forc o th brh
for lctrc motor
commtator. Motorbrh r mmz
brh war for mrov
motor rformac.
CONFORCE®, CONTORQUE®, PULLBOX® a ar tramark of Vlca Sr & Mf. Co.
THE COMPANY TO RELY ON...
Vlca Sr & Mf. Co., fo 1967, cat ot oly to mafactr th t
obl ctom-ma art bt to mak r that ach ctomr’ cc r ar flly
ralz th al roct.
Vlca or or ctomr th rvc of a flly trat, acally o mafactr
orazao, calz th a roco of cotat forc r a rlat
roct. Coforc®, Cotorq®, Coowr®, motor brh, tw r, mchacal rl, th
oral Pllbox® l, r ambl a rt lac croll ar all mafactr or
Tlfor, Pylvaa, USA factory.
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Cross Curve &
Snap Bracelets
Mechanical
Reels
Spiral Torsion
Springs
Other Custom
Springs
Cro crv matral a
at tr of tl whch
cro crv alo th
wth, mak th tr
r. It varo
calty alcao
cl aroac,
f a ral
tral.
Sa braclt ar
roc from a qly
ha matral that
lock wh traht a
col o th rla of
cro crv to.
Mchacal rl rov
owr for alcao
rqr cotrbalac,
rtrv or rtr. I
alcao rqr lo
co, mchacal
rl rov rlabl
forc a hh cycl lf.
Vlca’ mchacal rlar xtrmly r a
for maxmm lf.
Sral toro r ar
roc from at tl
a ar charactrz by
th rqrmt that thr
col tycally o ot toch
r orao. A ral
toro r wll xrt a
rotaoal torq, ally
throh 360° rotao orl. Th torq crv of a
ral toro r lar
to th r of rotao.
Thy ar brh
motor a alcao
whr hort rotao
rqr.
From tam a lot
clor to wr form,
toro r, cro-
crv a ta a
ctom at r ,
Vlca q to
mt all yor r
.
© Coyrht 2014, Vlca Sr & Mf. Co.
Vlca Sr qly q to b yor artr for ctom r olo. Mafactr
to th xact ccao of r a r, Vlca rov xtv xr,
rmm matral lco a la mafactr caabl.
Th vat majorty of th r Vlca Sr roc ar at r ma from Ty 301
tal tl. Othr matral ch a Elloy, Icol a hh-carbo tl ar alo lz. By
foc o o ty of r a ot try to bcom “vryth to vryboy”, Vlca Sr
ha vlo ratr alcao kowl a xr tha ayo l th at r
try. Flat tl r roct cl:
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CONSTANT FORCE SPRINGS
Sc th troco of cotat forc r to try, r hav b th comotto olv roblm rqr a cotat forc or torq. Evry cotat forc r roc to rov acc forc whch xrt throh th r xto of th r. Th forc cotat a lo a thra rma cotat. I lor r th cha ra, to amtr bl-, ca th r tocra forc lhtly a t xt. Cotat forc r lvr mor forc r o of matral tharavty vc.
VARIABLE FORCE SPRINGS
I om alcao t rabl for th r to hav l forc a t xt whl othr t rfrabl to hav mor forc. A r that roc l forc a t xt a to hav a avrat. Nav rat to 25% ar obl. A r that roct mor forc a t xt haa ov rat. Pov rat of 500% ar obl. Or comtr cotroll mach allow tomafactr r wth th varabl forc rqr to mt th of yor alcao.
MATERIALS
Svral matral ar to mak cotat forc r cl tal tl, hh carbo tl, Icol,
Elloy, lac a othr a rqr. Ty 301 tal tl ha rov to b ror for cott qalty,lf, avalablty, tr rto a lowt roct cot.
Not: 1. Ty 301 tal tl, t har coo, mac. 2. Pavao ot rqr or rcomm.
TESTING AND INSPECTION
Ico xr a ky art of or cc. Or mor mtroloy tool ar to accratly acottly mar th forc a may othr charactrc of or roct. All of or tool ar rolycalbrat to Naoal Itt of Staar a Tcholoy rqrmt.
Or qalty cotrol tam work cloly wth or al tam a or ctomr to clarly th co
crtra. W hav xrc work wth qalty roram from may tr cl aroac,atomov a f.
NORMAL FORCE TEST PROCEDURE
1. Th forc ally mar at thfll xto lth.
2. Th r cycl acro th ttlth at lat thr m.
3. Th r th xt to th ttlth a lock to rov a omalforc ra that thr xtor rtrac.
4. Normal tolrac ar ± 10% bothforc a amtr.
A a calty, Vlca ha th caabltyto rov yamc forc rathrohot a r’ xto artraco, v a fll vw of th r’rformac. Th cally hlflwh mar varabl forc r.
CONFORCE® SPRING DESIGN
“A” Minimum extension needed to achieve rated force = O.D. + PICKUP END
NOTE - No torque may be obtained from the storage spool of the spring.
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Conforce® Spring Twin SpringContorque® Spring Back Plate Assembly Variable Force Spring
(I.D.) of th r t o th thck, lfcycl a forc rqr. Th ot amtr (O.D.) t o th abov wth ovrall lth a aaoal corao. Not that a cotat forcr o ot xt tat to th boy of th r.To allow for ror orao, a mmm tac of.80” X I.D. rqr a hol b cor ral . Th taar tolrac for th I.D. a O.D. ± 10%.
5. Calculate the total length – Th total lth of th rhol tak to accot th actal xto of thr th alcao. Aoally, allow for at lat1 tr to rma wh th r flly xt. If
mo th r o a ovrz ool, aoalmatral may b rqr. Th bac formla for thmao :
(I.D. X 3.14159 X 1.5) + maxmm xto lth.
Wh a ool amtr ratr tha th I.D.,btt th ool amtr lac of th I.D. for thcalclao.
If thr a lar o th frot of th r (commolycall a ck), that lth hol b a to thovrall lth.
6. Select the end detail – Vlca Sr ha may taar tal avalabl. Draw o a 10 a 11 how
om that ar avalabl. Scal may bobta for a aoal char.
7. Consider the environment – Corrov atmohr orxtrm tmratr wll act a r’ rformac.A Vlca r ca at th tao whcho ca b ar wth altrat matral choc.
8. Finalize the design – Oc all of th abov crtrahav b rvw, a th r ca b locat orxtraolat from th chart, a r art mbrca b troc. Vlca’ ytm qt ay wha art mbr to . B awar howvr,that a art mbr o ot cl th tal,ck lth or ay othr cal rqrmt. Thart mbr th follow:
a. Th lr from th lct lf tablb. Th thck of th r mlc. Th lr co of th wth of th r
(tak from th chart) . Th ovrall lth ch
Th follow aramtr act th : lf, forc,ac avalabl, lth a vromtal factor. Othrfactor whch may b q to a arclar alcaohol b c wth yor Vlca Sr r othy ca b cor th al .
Th follow a cl a fw r-r to mlfy th tak of th r.
These tables should be used only as a guide andare not a list of stock springs.
For avalabl tock r, vw a 10.
Vlca Sr work wth or clt at varo ta
of thr roct vlomt roc wth DFM(D For Mafactr) rcl. W wll hl yolz taar tl z a omal mafactrtchq to or th bt r obl atth lowt cot. D to varabl th raw matral,a tolrac of ± 10% both forc a amtr rqr.
Rvw th tabl th to at yo wth thfollow aramtr:
1. Select material – Mot of th at tl r thatVlca Sr roc ar ma from Ty 301
Stal Stl. Th matral raly avalabl arctabl. A Vlca Er ca at chooa taar z to xt th roc. Othrmatral w hav to mafactr cotatforc r cl hh carbo tl, Icol aElloy.
2. Esmate the life – Th lf of a cotat forcr vry rctabl, mak t o of th motmortat corao. Th mt bralc howvr, c ma a hh lf cyclca la to a larr, mor xv art whlrma th lf cycl ca la to rmatrfalr. Th D G ha chart that rafrom 4,000 to 100,000 lf cycl. If a hh lf cycl
, corao hav to b ma forcra tolrac of th r’ amtr aforc to th low tr lvl a lht varac matral.
3. Establish the force – Th forc of a cotat forcr hol b qal to th rqrmt of thalcao. Staar tolrac for th forc of acotat forc r ± 10%.
4. Determine the space – Wh rvw th chart or D G, t wll bcom obvo that thrar vral thck a wth combao thatwll rlt th am forc. Th amtr
DESIGN CONSIDERATIONS
Example: Conforce Spring #J12G21 species type 301stainless steel, 8,000 cycle, .012” thick, /” wide, 21”long spring, producing force of 3.42 pounds, with a 1.05”I.D. Further customer specic requirements such as enddetails would be added to the part number.
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CONFORCE® SPRING DESIGN GUIDE
Symbols used in Design Guide: t = matral thck (ch) ID = col amtr (ch) ± 10%
b = matral wth (ch) P = forc (o) normal force tolerance ± 10%
GUIDE HSPRING LIFE
4,000 C YCLES
GUIDE JSPRING LIFE
8,000 C YCLES
GUIDE KSPRING LIFE
12,000 C YCLES
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AISI TYPE 301 STAINLESS STEELVIEW END DETAILS ON PAGE 20
Symbols used in Design Guide: t = matral thck (ch) ID = col amtr (ch) ± 10%
b = matral wth (ch) P = forc (o) normal force tolerance ± 10%
GUIDE LSPRING LIFE
25,000 C YCLES
GUIDE MSPRING LIFE
50,000 C YCLES
GUIDE NSPRING LIFE100,000 C YCLES
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CONFORCE® SPRING DESIGN GUIDE - METRIC
Symbols used in Design Guide: t = matral thck (mm) ID = col amtr (mm) ± 10%
b = matral wth (mm) P = forc (Nwto) normal force tolerance ± 10%
GUIDE HSPRING LIFE
4,000 C YCLES
GUIDE JSPRING LIFE
8,000 C YCLES
GUIDE KSPRING LIFE
12,000 C YCLES
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AISI TYPE 301 STAINLESS STEELVIEW END DETAILS ON PAGE 21
Symbols used in Design Guide: t = matral thck (mm) ID = col amtr (mm) ± 10%
b = matral wth (mm) P = forc (Nwto) normal force tolerance ± 10%
GUIDE LSPRING LIFE
25,000 C YCLES
GUIDE MSPRING LIFE
50,000 C YCLES
GUIDE NSPRING LIFE100,000 C YCLES
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STOCK CONSTANT FORCE SPRINGS
S E R I E S
L S
P R I N G L
I F E
2 5 , 0 0 0 C Y C L E S
SL4D18 .004” .250” 18” .23 lb .53” .62” 1-.130SL5E18 .005” .312” 18” .36 lb .69” .78” 1-.130
SL5F25 .005” .375” 25” .43 lb .65” .78” 1-.130
SL6F25 .006” .375” 25” .52 lb .70” .90” 1-.196
SL6G25 .006” .500” 25” .70 lb .80” .92” 1-.196
SL8G33 .008” .500” 33” .93 lb 1.07” 1.23” 1-.196
SL10J35 .010” .625” 35” 1.46 lb 1.36” 1.53” 1-.196
SL12K45 .012” .750” 45” 2.09 lb 1.60” 1.82” 1-.196
SL12P45 .012” 1.00” 45” 2.80 lb 1.60” 1.84” 1-.196
SL15P48 .015” 1.00” 48” 3.50 lb 1.96” 2.20” 1-.196
SL15R48 .015” 1.25” 48” 4.37 lb 2.03” 2.29” 1-.196
SL16P46 .016” 1.00” 46” 4.10 lb 1.96” 2.21” 1-.196
SL20R55 .020” 1.25” 55” 5.83 lb 2.53” 2.82” 1-.196
SL25S60 .025” 1.50” 60” 8.40 lb 3.35” 3.70” 2-.265
SL25U60 .025” 2.00” 60” 11.70 lb 3.37” 3.68” 2-.265
SL31U70 .031” 2.00” 70” 14.40 lb 4.35” 4.74” 2-.265
S E R I E S
H S
P R I N G L
I F E
4 , 0 0 0 C Y C L E S
Part # Thickness Width LengthLoad
+/- 10%
I.D.
+/- 10%
O.D.
+/- 10%End Holes
SH3C12 .003” .187” 12” .37 lb .21” .30” 1-.096SH4C15 .004” .187” 15” .49 lb .29” .40” 1-.096
SH4D15 .004” .250” 15” .66 lb .25” .40” 1-.130
SH4E15 .004” .312” 15” .83 lb .28” .40” 1-.130
SH5E17 .005” .312” 17” 1.03 lb .37” .50” 1-.130
SH6F24 .006” .375” 24” 1.48 lb .45” .62” 1-.196
SH6G25 .006” .500” 25” 1.97 lb .45” .65” 1-.196
SH8G30 .008” .500” 30” 2.63 lb .59” .82” 1-.196
SH8J30 .008” .625” 30” 3.29 lb .61” .83” 1-.196
SH8K24 .009” .750” 24” 4.00 lb .62” .82” 1-.196
SH10J33 .010” .625” 33” 4.12 lb .73” .99” 1-.196
SH10K33 .010” .750” 33” 4.95 lb .71” .97” 1-.196
SH12K39 .012” .750” 39” 5.94 lb .88” 1.19” 1-.196
SH12P39 .012” 1.00” 39” 7.92 lb .88” 1.20” 1-.196
SH16P40 .016” 1.00” 40” 10.60 lb 1.20” 1.52” 1-.196
SH20R50 .020” 1.25” 50” 16.50 lb 1.47” 1.89” 1-.196
SH25S52 .025” 1.50” 52” 24.80 lb 1.77” 2.23” 2-.265
SH25U52 .025” 2.00” 52” 33.00 lb 1.78” 2.22” 2-.265
SH31U60 .031” 2.00” 60” 40.90 lb 2.50” 3.03” 2-.265
Evry cotat forcr roc
to rov a cfcforc whch xrtthroh t fllxto. Th forc cotat a lo ath ra rmacotat.
I lor r thcha ra, to amtrbl-, ca thr to cra
forc lhtly a t xt.
Cotat forc rlvr mor forcr o of matraltha ravty vc.
TO ORDER VISIT WWW.VULCANEXPRESS.COMTh Vlca Sr a Mafactr Exr Ol Stor rov a a covcto or commrcal ctomr. Sr a cfcato ar bjct to cha.
SH6G25
SH12K39
SL6G25
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SINGLE MOUNTING
MULTIPLE MOUNTING
Looped & WeldedScallop EndHook End Eyelet or RivetZ Bend
Tandem - th cofrato o ot a tablty
Cavity - Low cot, bt frcto a lmt factor
Laminar - Offr m of forc a lmt ac
Back to Back - Mot tabl mot
Spool Mounting - a commo mtho
MOUNTING METHODS
NOTE: No torq may b obta from th tora ool of th r. For al orato, th amtr of thool hol b 15-20% ratr tha omal r I.D.
Forc th m of two or mor r.
NOTE FOR ALL CONSTANT FORCE SPRINGS
1. Ilr lly hol ot b bca lf
rc by a mch a at ach lly.
2. Backb troy a cotat forc r.
SAMPLE END DETAILS
1
2
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MOTOR BRUSH & TWIN SPRING DESIGN1. Select material - Ty 301 tal tl rfrr.
Scal matral ar rqr f crrt to b carr throh th r.
2. Establish the force - Th forc of th r hol b qal to th r forc rqr to obta th r
brh rr. Normal r tolrac ± 10%.
3. Determine the space - For ay v forc thr ar vral combao of r thck a wth thatca b . Slct th o that bt t th ac.
4. Calculate the total length - Icl two fll tr xtra wh th r flly xt, ba o th lth
of th brh wh w.
1. Constant pressure for the lifeof the brush
a. Elmat rr ajtmtb. Icra brh lf
c. Rc lctrcal war
2. Compact design
a. Allow lor brh
b. Prmt a mallr motor O.D.
c. Allow larr commtator
PIN MOUNTING
Not-Recommended
BENEFITS
Symbols used in Design Guide:
t = matral thck (mm) ID = col amtr (mm) ± 10%
b = matral wth (mm) P = forc (Nwto) normal force tolerance ± 10%
Symbols used in Design Guide:
t = matral thck (ch) ID = col amtr (ch) ± 10%
b = matral wth (ch) P = forc (Po) normal force tolerance ± 10%
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5. Choose the conguraon that ts your applicaon best.
a. Straht xto r - A l r
b. Lamat r - Two or mor r, trwo. Th allow a cra loa a mall ac.
c. Tw col r - For maxmm brh lth a obl th loa of a l r. Th form allow
maxmm commtator amtr a mmm ovrall motor amtr.
6. Allow clearance for spring cross-curvature which varies with spring width.
Start at t m th thck of th r. S th rahc blow...
Symbols used in Design Guide:
t = matral thck (mm) ID = col amtr (mm) ± 10%
b = matral wth (mm) P = forc (Nwto) normal force tolerance ± 10%
Symbols used in Design Guide:
t = matral thck (ch) ID = col amtr (ch) ± 10%b = matral wth (ch) P = forc (Po) normal force tolerance ± 10%
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CONTORQUE® SPRING DESIGN
A cotat torq r a cally tr cotat forc r travl btw two ool. Thr tor o a tora ool a rvr wo oto a ott ool. Wh rla, torq obta from th ott ool a th r rtr to t atral crvatr o th tora ool. Thr o ot to b aach to th tora ool. Th rca b ho a cavty, lma th for a tora ool.Howvr, frco th troc a ca cha th torqrqrmt.
Th torq roc by a cotat torq r wll cra lhtlyovr may tr. Cotat torq, or v av torq, aloobl. Nav rat a mch a 50% ca b achv crta alcao.
Wh cor th of a cotat torq r t hhlyrcomm that yo ak wth a Vlca r a workthroh varo aramtr. Howvr, t obl to makom al calclao by follow th t crbblow.
Th follow aramtr trm th : matral, wth,thck, lth, ool amtr, a th atral amtr of thr.
Th follow a cl a fw r-r to mlfyth tak of th r. These tables should be used only asa guide and are not a list of stock springs. S avalabl tock r th tabl blow.
Vlca Sr work wth or clt at varo ta of thrroct vlomt roc wth DFM (D For Mafactr)rcl. W wll hl yo lz taar tl z a omal mafactr tchq to or th
bt r obl at th lowt cot.
DESIGN CONSIDERATIONS
Part
Number
Torque
± 10%
Thickness
(t)
Width(b)
Length TurnsID
± 10%
Storage
Drum(Ds)
Output
Drum(Do)
Center to
Center
(s)
Inner
End
Detail*
SV3D48 0.18 -lb 0.003” 0.250” 48” 20 0.30” 0.35” 0.61” 0.65” 4
SV4D64 0.33 -lb 0.004” 0.250” 64” 20 0.41” 0.47” 0.81” 0.90” 4
SV6D96 0.75 -lb 0.006” 0.250” 96” 20 0.61” 0.70” 1.22” 1.30” 4
SV4G64 0.67 -lb 0.004” 0.500” 64” 20 0.41” 0.47” 0.81” 0.90” 5
SV6G96 1.50 -lb 0.006” 0.500” 96” 20 0.61” 0.70” 1.22” 1.30” 5
SV10G160 4.17 -lb 0.010” 0.500” 160” 20 1.01” 1.17” 2.02” 2.25” 5
SV12J192 7.50 -lb 0.012” 0.625” 192” 20 1.22” 1.40” 2.43” 2.60” 5
*S a 20 for tal raw a cfcato.
Sr ar roll a h rvr. Torq ± 10% at 10 tr. Rcomm ool z. Sool ot cl.Th tabl to qckly choo a at orr a cotat torq r a a aml or rototy.
TO ORDER VISIT WWW.VULCANEXPRESS.COMTh Vlca Sr a Mafactr Exr Ol Stor rov a a covc to or commrcalctomr. Sr a cfcato ar bjct to cha.
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Review the tables in this guide to assist you with the following design parameters:
1. Select material - Mot of th at tl r that Vlca Sr roc ar ma from Ty 301 StalStl. Th matral raly avalabl a rctabl. A Vlca Er ca at choo a taarz to xt th roc. Othr matral w hav to mafactr cotat forc r cl hhcarbo tl, Icol a Elloy.
2. Esmate the life – Th lf of a cotat torq r vry rctabl, mak t o of th mot mortatcorao. Th mt b ralc howvr, c ma a hh lf cycl ca la to a larr,mor xv art whl rma th lf cycl ca la to rmatr falr. Th D G hachart that ra from 4,000 to 50,000 lf cycl. If a hh lf cycl , corao hav to bma for cra tolrac of th r’amtr a forc to th low tr lvla lht varac matral.
3. Establish the torque – Th torq of thr hol b qal to th rqrmt ofth alcao. Staar tolrac for thforc of cotat torq r ± 10%.
4. Determine the space – Wh rvw thchart th D G t wll bcomobvo that thr ar vral thck awth combao that ca b to cratth am torq. Th amtr (I.D.) ofth r t o th thck, lfcycl a torq rqr. Ovrall lth a aoal factor that th otamtr (O.D.) Th taar tolrac for thI.D. a O.D. ± 10%. Sac rqrmtmt alo cor th flly wo otamtr of th tora a ott ool awll a th tac btw th ool.
5. Calculate the total length – Th total lthof th r hol tak accot th actalmbr of tr of th r o th ott ool l at lat oh matral tok 1- tr o th r wh t flly rotat. Th formla for trm
lth a follow:L=π N (Do +Nt) +10 Do
Th abov formla tak to accot: amtr bl, mbr of rvolo rqr (N), thck ofmatral (t) a ott ool amtr (Do).
6. Select the end detail – Th tal wll coct th r to th ott ool. Draw o a 10 a 11how om that ar avalabl. Scal may b obta for a aoal char.
7. Calculate the minimum spool spacing – Th tac btw ool ctr (mo “S”) mt b ratrtha th ra of th r wh flly wo o th tora ool, PLUS th ra of th r wh fllywo o th ott ool.
8. Consider the environment – Corrov atmohr or xtrm tmratr wll act a r’rformac. A Vlca r ca at th tao whch o ca b ar wth altrat
matral choc.
9. Finalize the design – Oc all of th abov crtra hav b rvw, a th r ca b locat orxtraolat from th chart, a r art mbr ca b troc. Vlca’ ytm qt aywh a art mbr to . B awar howvr, that a art mbr o ot cl th tal, ck lth or ay othr cal rqrmt. Th art mbr th follow:
a. Th lr from th lct lf tablb. Th thck of th r mlc. Th lr co of th wth of th r
(tak from th chart). Th ovrall lth ch
Drawing is of a Hinge Spring
Example: Contorque Spring #V5D46 species Type 301stainless steel, 4,000 cycle, .005” thick, /” wide, and 46”long, producing a torque of .52 inch-pounds for 12 outputturns, when mounted on a .58” diameter storage spooland a 1.01” diameter output spool.
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Page 16
CONTORQUE® SPRING DESIGN GUIDE
Symbols used in Design Guide: t = matral thck (ch) ID = col amtr (ch) ± 10%
b = matral wth (ch) Do = ott ool amtr (ch)
= tac btw ool ax D = tora ool amtr (ch)
GUIDE VSPRING LIFE
4,000 C YCLES
GUIDE WSPRING LIFE
8,000 C YCLES
GUIDE XSPRING LIFE
12,000 C YCLES
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Page 17
AISI TYPE 301 STAINLESS STEEL
Mulple Contorque® Motor AssemblySingle Contorque® Motor Assembly
VIEW END DETAILS ON PAGE 20
Symbols used in Design Guide: t = matral thck (ch) ID = col amtr (ch) ± 10%
b = matral wth (ch) Do = ott ool amtr (ch)
= tac btw ool ax D = tora ool amtr (ch)
GUIDE YSPRING LIFE
25,000 C YCLES
GUIDE ZSPRING LIFE
50,000 C YCLES
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Page 18
CONTORQUE® SPRING DESIGN GUIDE - METRIC
Symbols used in Design Guide: t = matral thck (mm) ID = col amtr (mm) ± 10%
b = matral wth (mm) Do = ott ool amtr (mm)
= tac btw ool ax D = tora ool amtr (mm)
GUIDE VSPRING LIFE
4,000 C YCLES
GUIDE WSPRING LIFE
8,000 C YCLES
GUIDE XSPRING LIFE
12,000 C YCLES
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Page 19
AISI TYPE 301 STAINLESS STEELVIEW END DETAILS ON PAGES 21
Symbols used in Design Guide: t = matral thck (mm) ID = col amtr (mm) ± 10%
b = matral wth (mm) Do = ott ool amtr (mm)
= tac btw ool ax D = tora ool amtr (mm)
GUIDE YSPRING LIFE
25,000 C YCLES
GUIDE ZSPRING LIFE
50,000 C YCLES
Single Spring Motor
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Page 20
COMMONLY USED END DETAILS
Vlca Sr ha may taar to crat th tal cary. Th ma how a fw
commoly tal that ar avalabl. Scal ca b ma o rqt.
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Page 21
METRIC MEASUREMENTS
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Page 22
CONPOWER® AND POWER SPRING DESIGN
Coowr® a owr r, alo kow a clock r, ar form by w a tr
of matral o a arbor a to a ca or rta r to crat a comact owr orc.
Rotaoal torq obta from a ctr arbor or from th ca. Th torq cra
throhot th total w of th r.
CONPOWER® VS POWER SPRINGS
Coowr® r r from covoal owr r bca thy ar r-tr to
roc a ar torq rat. I ao, thy ca b to cra th mbr of
tr a ca of a v amtr.
Both Coowr® a covoal owr r rov rotaoal ry from thr th
arbor or th ca, or lar moo wth th of a lly or cabl.
DESIGN CONSIDERATIONS
D crtra for both ty of owr r ar th am. Th co to a
covoal owr r or Coowr® r ba o th alcao. Imortat
corao for a mafactr owr r cl:
1. Arbor z (see A in diagram on next page)
2. I amtr (I.D.) of ca (see B in diagram on next page)
3. Avalabl ca wth (see C in diagram on next page)
4. Tr rqr
5. Torq rqr6. Locao (a tolrac) of ctr y/tab
7. Lf cycl rqrmt total mat
8. Evromt whch th owr r wll b
9. Mo rqrmt for ca a arbor.
PRODUCTS AND APPLICATIONS THAT USE POWER SPRINGS
Coowr® a owr r ar al for a w varty of whr mooth rtr a
rtrv, cotrbalac a to ar rqr.
Proct that owr r may cl: cor rtractor, cotrbalac,
w- toy a am, mr, a lctrcal a mchacal rl.
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Page 23
Part Number TypeTorque
(in-lbs)
Arbor Size
(inches)
Number
of Turns
Case I.D.
(inches)
Width
(inches)
SCP4G202VS Coowr® 0.41 0.250 44.00 1.50 0.500
SCP7.5D50VS Coowr® 0.73 0.250 11.50 1.00 0.250
SCP6G135VS Coowr® 0.93 0.250 30.00 1.50 0.500
SCP8G108VS Coowr® 1.65 0.250 22.00 1.50 0.500
SCP10G81VS Coowr® 2.58 0.250 17.00 1.50 0.500
SCP18D162VS Coowr® 4.20 0.625 14.00 2.80 0.250
SCP13G59VS Coowr® 4.32 0.250 11.50 1.50 0.500
SPS16F77VS Powr 4.50 0.250 12.00 1.80 0.375
SPS20F65VS Powr 7.00 0.250 9.00 1.80 0.375
SCP18G198VS Coowr® 8.30 0.625 16.50 3.00 0.500
Th tabl to qckly choo a at orr a owr r a
a aml or rototy. For th rao thr ar crta cfcato whch ar
cotroll. Th cl, bt ot lmt to, th locato of th r tab of
th r.
It rcomm that yo cotact o of or r at 215-721-1721
to c th cfcato that ar rqr for a cfc rojct. Pla hal
th r carflly a thy ar r tr a ca ca jry.
TO ORDER VISIT WWW.VULCANEXPRESS.COM
Th Vlca Sr a Mafactr Exr Ol Stor rov a acovc to or commrcal ctomr. Sr a cfcato ar bjct
to cha.
STOCK CONPOWER® & POWER SPRINGS
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Page 24
SPIRAL TORSION SPRINGS
Sral toro r ar roc from at tl a ar charactrz by thr col, whch tycally o ot toch
r orao.
A ral toro r wll xrt a rotaoal torq, ally throh 360° rotao or l. Th torq crv lar to th r of rotao.
Th r of th r tycally bt to aach to a arbor
or hb. Th otr th aach to th objct that
rota or lz th torq of th r.
Vlca’ hhly qal r ar abl to rvw th
crrt or work wth a clt to achv th bt obl
olo. Hh mafactr roc r fat m
to markt at a raoabl rc.
APPLICATIONS AND USES
Sral toro r ar brh
motor a crta alcao whr a
hort rotao rqr. Itr that
th r cl:
1. Elctrc Motor
2. Itral Tool
3. Atomov & Traortao
4. Mcal Dvc a Halthcar
MANUFACTURING PROCESS
Vlca Sr lz hhly ctomz roco qmt, la mafactr tchq a rcl,
a ISO 9001:2008 cr rocr to rov or ctomr wth a traml a ct mafactrroc to roc ral toro r.
Bt of work wth Vlca Sr cl rc la m, hh qalty cotrol a hhly comv cot.
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Page 25
Th calty cotrbalac roct rov th rfct amot of forc
for both ay-o a clo of ovrha oor. Major bvra trck
mafactrr th USA Vlca Sr’ cotrbalac. W ar alo
th la armarkt cotrbalac mafactrr.
CUSTOM COUNTERBALANCESA comltly ctomz olo, trck oor cotrbalac ar
mafactr to th xact ccao for ach bvra trck mafactrr
a rfrbhr.
TECHNICAL CONSIDERATIONS
TRUCK DOOR COUNTERBALANCE SPRINGS
AVAILABLE SIZES
INNER OUTER
29 ” 20”
37 ” 30”
39 ” 30”
41 ” 30”
44 ” 30”
49 ” 30”
53 ” 45”
65 ” 55”
69 ” 55”
85 ” 75”
DOUBLE SPRING
85 ” 75”Image is shown as a cut-away view, displaying the inside of a counterbalance.
Cotrbalac for trck oor ar avalabl z from 29” to 85”.
Features include:
1. Hal to 85 lb. of forc
2. Staar for mot O.E.M. or rtrot
alcao
3. Zc lat tb
4. Hht qalty .120” or .135” amtr
r wr
5. Rtroof bar
Cotact Vlca Sr at 215-721-1721 for
frthr atac wth bvra trck oor
cotrbalac.
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Page 26
1. Proco Facl cl:
a. Lama
b. Ambly oto ool
c. Rv
. Sot wl
. Lar rf. Slk cr (r)
. Stam
2. Part Icao - Avalabl wh rqr:
a. Color co
b. Elctro chmcal tch
c. D tam
. Lar rav
Variable Force Power Spring
Printed Springs Spring with Laminate
Slot Closer Reels
3. Scal acka
4. Atomac roco cotrol a qmt
5. Comlt tool mafactr facl
6. Srfac coa & lamat
7. Prototy caabl8. SPC rort avalabl
9. Crcao a rqr
10. D coltao
Th facl abl to a bl or ow
tool a mach a allow mor xblty for th
Vlca ctomr.
D r ar coally way to
rt cotat forc a cotat torq r
thr rojct. Th rmarly bca th r
rov a vry accrat, abl a coomcal
form of tal raot or othr val cao. A
ml coct lz th motor form of th r to
ra ot a wll a to rov to o a cor aach
to th mov objct.
Vlca ha comlt tmratr a hmty co-
troll facl for rfac coa.
A aral lt of coa cl:
a. Ahv-back lamat
b. Pa
c. Dry lm lbrcat
. Ol
SERVICES OF VULCAN SPRING
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Page 27
OTHER PRODUCTS OFFERED
V-Sr lvr abl varabl forc to rcly
match cra or cra forc rqrmt. A
ach roct rmov, th v-r rc forc,
v a mmal h wh a lay arly mty.
V-Spring
Varabl forc r, alo
kow a varabl to
r.
Sml, vral a cot cv - Vlca’ lf
col lac croll ar th al ytm for cra
aracv lay that qckly commcat a varty of
ma. Vlca mafactr lac croll to xact
ccao, wth to 6” a lth to 30”.
Vral, r a abl, th Pllbox® l
of rtractabl tthr t th taar for rov
rformac a ctomzabl oo. Pllbox® ar
for ot of rcha crty, roct oo,
qmt cotrbalac, wr har oo
lctroc qmt, roct f, a a
ort. Th rov Vlca’ cotat
forc r tcholoy to rov cotat, rlabl
to at a varty of forc.
Th VS-1 th al roct oo olo. It
ca b mot o th or ot of a lay aa fcoal a athc comot of a cv
ot of rcha rtao. Wth v r
color avalabl, th VS-1 bl wth ay lay to
crat a ov ctomr xrc. It ca wvl
for 360° rotao a crw or b mot
obl- ta.
Th MVS lhtly larr tha a qartr yt cota
to 36” of ylo-covr tl cabl. Th MVS’
w cabl lot allow for maxmm xblty
a ay rcol. Th ball accommoat
a w ra of avalabl fatr, cra th
tthr’ vralty a mlfy tallao.
Plasc Scrolls
Prt wth mbr or
lr whch rov th
r wth formao.
Pullbox®
L of ctommafactr rtal lay
crty tthr, kow a
rcolr & cabl rtractor
VS-1
Comact, aracv way to
lvr th-trrc &
covc.
MiniVS
Comact crty cabl
rtractor for oommal lvl of crty.
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THE SOURCE FOR CONSTANT FORCE SPRINGS
Advanced Manufacturing TechniquesAt Vlca, w ar totally volv cotat forc r tcholoy. W a atomat or
mafactr mach. W mata a r ytm of chck ot to motor crcal ta of roco.
W roly rvw a morz or mafactr a qalty cotrol rocr. Th foc a
ao to tal ar vry ctomr th mot cott a hht qalty roct avalabl
toay, all at a raoabl cot.
Design AssistanceEvryo at Vlca comm to mak r yo t th bt obl r for yor cc .
To o th, w or yo or atac lc th bt matral a mafactr rocr. For
omm , w rcomm that yo cotact a rqt th rvc of or r a arly a
obl yor rojct.
DeliveryFat a abl! ... for all roco orr a wll a rototy. W hav b comlmt may
m for mata th oo b racc of k or rom lvry at. Yo ca o
Vlca Sr.
VULCAN SPRINGS WORK!
501 Schoolhouse Road, Telford, PA 18969 USA
Telephone +1 215-721-1721 | Fax 215-721-1739
sales@vulcanspring com | www vulcanspring com
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