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qm{rfuoq$emfttrdCOMMERCIAL TEST REPORT
Telep hone 201662 -27 6824,27 617 2Website :
http://nrfmtti.dacnet.nic.in
ROTAVATOR"s-642 G.T."
dwr No. :IMP-536/1381Af6 Month : Novembe420ll
Telefax No. 01662-27 6984E-Mail : [email protected]
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GOVERNMENT OF INDIA .MINISTRY OF AGRICULTURE,
(DEPARTMENT OF AGRICULTURE & COOPERATION)
Bafl Ar Ae aeftaff gfQrc{or ud qflaror riuqrd'ASet 6fde, futur
ig, P6uR-12s001 (6ftqrqr)
NORTHERN REGION FARM MACHINERY TRAINING AND TESTING
INSTITUTETRACTOR NAGAR, SIRSA ROAD, HISAR-125001 (HARYANA)
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rMP- 536/1381 ROTAVATOR*s-642G,T."
COMMERCIAL ( ICT ) 7
4.tt Overall Dimensions, mmLengthWidthHeightMass, kg
LABORATORY TEST
(Ref. Fig.l)
The hardness of blades was determined at edge and shank portion.
The results ofhardness test are tabulated in Table-I.
TABLE-I : Blade Hardness
The hardness of blades at shank portion is not conforming to IS
: 6690 : Jan20A25.2 Chemical composition
The chemical composition of blades is tabulated in
Table-2TABLE-2 : Chemical composition of primary elements
FIELD TESTThe field tests of the implement comprising of dry and
wet land operations
were conducted for 2l-43 to 15.25 hours respectively at
different soil moistureconditions to assess the performance of the
implement. The details of tractorused for field operations are
given in Annexure-I.
The tractor pto speed was observed at 540 rpm. The performance
ofimplement is reported in Annexure-Il and summarized in
Table-3-
2404.01010.01230.0534.0
5.5.1
-:*rJ' -.1."i,'..''.'--, , i,.t' '.'r '' ,i". : -.
6.
S. No. Portion of blade Hardness (HRC) RemarkAs per
IS :6690-Jan.Q007\
As observed
I On Edgeportion
53 to 59 56 Conforms
2 On shankportion
37 to 45 54 Does notconform
sl.No.
Material Requirement as perIS:6690-Jan . 2007
( Yoby weisht )
As observed(%by weight )
Remark
1 Carbon I 0.50 to 0.60 0.26 Does not conform
2. Silicon(Si) 1.50 to 2.00 0.71 Does not conform
3. Manganese (Mn) 0.50 to 1.00 t.25 Does not conform
4. Phosphorous (P) 0.05 (max) 0.006 Conforms
5. Sulphur (S) 0.05 (max) 0.00r Conforms
NORTHERN REGION FARM MACHINERY TRAINING AND TESTING INSTITUTE,
HISSAR
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IlvP- s36l1381 ROTAVATOR*s-642G.T." COMMERCIAL ( ICT )
TABLE-3 : Summary of field performance
6.1 Rate of Work6.1.1 Dry land operation
-The rate of work in clay loam soil was recorded as 0.41 to 0.51
ha/h and thesqged of operation as 2.50 to 2.5g kmph.-The time
required to cover one hectare area was recorded as L95 to 2.17
h.
6.1.2 Wet land operation- Speed of operation varied from 2.36 to
2.40k*ph.
6.2 Qualify of work6.2.1 Dry land operafion
-The depth of operation was recorded as 7.50 to 9.31 cm.-The
field efficiency was recorded as g4.0i .'gi.'ity,.6.2.2 Wet land
operation
-Depth ofpuddle was recorded as I 7.66 to lg.l6 cm.-Puddling
index was recorded as 60.97 to 6g.30oh.
SI.No. Parameters Dry land operation Wet land operation(
puddling )
i) Tractor usedFarmtt_-_
Cla
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8.0 to 8.5
ii) Type of soil ,dU OJETIy Ioamiii) Av. Soil moisture, Zo
iv) Denth of strt dii.,-'i-ilv) 8.0 to 10.33rrero eutcrency, u/o
84.03 to 91.81vi) Puddling lndex,%
60.97 to 68.30-L36 t-torA}
vii) Ay. Dpeeo ot operation,kmph
2.50 to 2.58
viii) AV. ueptfi of cut. cm
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Av. depth of puddG.l*7 .50 10 9.31ix)
2.17 to 2.28x) Av. Working width, m
I /.OO to I g.16
xi) Area covered, halh 0.46 to 0.51xii) Time required for
onehectare, h
1.95 to 2.17
xiii) ruer consumptron_ tlh_Uha
+.tJ to )- /'2 4.41 to 4.97d.lu to t2.43
Ng&IHISSAR
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rMP- 536/1381 ROTAVATOR*s-642G.T."COMMERCIAL ( ICT ) 9
6.3 Wear of Blades6.3.1 On Mass basis
Wear of hatchet blades (mass basis) after 36.68 hrs. of field
operation is .f,fII.Tabulated in Table-4 & 5.
TABLE-4 : Wear assessment of hatchet blade on mass basis.sl. No.
Initial mass of
blade (g)Mass after 36.68 hrs.
ofoperation (g)Loss (g) Wear ( Yo) on
mass basis
I 1001.8 947.6 54.2 5.41
2. 1028.4 986.4 42.0 4.08
3. t0t3.1 963.9 49.8 4.914. 1030.5 986.8 43.7 4.24
5. 1004.6 955.6 49.0 4.87
6. 1023.1 973.4 s0.7 4.95
7. 1012.2 970.5 41.7 4.11
8. 1029.5 97t.4 58. r 5.64
Table 5 : Wear of blades on dimensional basis.
7.0 EFFECTIVENESS OF SEALINGSAfter completion of field test in
wet land for 15.25 hrs-, the implement was
dismantled to check effectiveness of sealing provided against
ingress of dust andwater/mud in various sub-assemblies decide the
condition of components of theRotavator.
6.3.2 On Dimensional basis (Ref Fig. 5)
S1.No. Initial s/idth at (mm) Width after 36.68 hrs. at(mm)
Wear(%)Dimensional basis
A(attip) B(65mmfrom edge )
A (at tip ) B (65 mmfrom edge)
A (at tip ) B(65mmfrom
edee )
1 69.0 80.3 55.0 70.30 20.28 12.45
2. 70.9 81.4 62.40 72.50 l 1.98 10.93
3. 70.1 80.3 55.40 71.55 20.97 10.89
4. 74.9 81.4 61.00 73.25 13.96 10.01
5. 74.4 81.0 s7.40 72.15 18.46 10.92
6. 69.3 80.0 57.60 74.60 16.88 Lt.75
7. 68.9 80.9 57.70 12.80 16.25 10.01
8. 70.0 81.1 57.90 70.80 17.28 t2.70
SINo. Location Whether ingress of mudand/or water was
observed
Primarv reduction gear box. No
2. Secondary reduction chain; drive No
J. Hub of rotor assembly No
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rMP- 536/1381 ROTAVATOR*s-642G.T.,, COMMERCIAL ( ICT ) l0
EASE OF OPERATION, ADJUSTMENTS & SAFETY
*ttlT:t}?#'.'""#.?t nor the drive shaft (universar coupring
shaft) is provided
Depth adjustment can be made by raising or lowering the
skicls.
operator has to get down from tractor for making adjustment in
Rotavator
The propeller shaft has telescopic sections with universal
joints to adjust thelength of drive shaft which is adequate.
Implement do not have provision to vary rotor shaft speed to
meet different soiland moisture conditions.
9. SOUNDNESS OF CONSTRUCTIONNo breakdown occurred during
36.6ghrs operation in the fierd.
IO. COMMENTS & RECOMMENDATIONS10' l All of the dimensions of
three point Iinkage of the implement confbrms toIS :446 8-M arch
2007 (part-t).
10'2 Maneuverability of tractor with Rotavator and quarity of
work u,ere observed tobe satisfactory.
10 3 :'{ff:#Hl*:,::#::ljffi:':: ror change in rotor speed to
suit wider ranse
l0'4 Dimensions of power input shaft 1e not complying with
relevant BiS standard.This needs to be looked into and proper
in-prt inun shoula used at regularproduction level.
l0'5 The hardness at hatchet blades in the edge portionand in
the shank portion was 56HRC and 54 HRC respecrivery against
irr"'*qrrr.ment of s: to j6;'ffi;:d:portion and 37 to 45 HRC at ,t
urt po.uorr'..rpectivery as per IS:
66g0-Jan.2a07.Thiscallsforimprovementatproductionlevel.10'6 The
percentage wear of hatchet blades on mass basis during field
operation of36.69 hr' ranged from 4.0g to 5.64%owhich i, .orrorred
to be normar.rcJ The percentage wear of hatchet blades on
dimensional basis after field operation
ff?H#H:li:ar I'e8 to 2l'eTroand 10.0i to t2.7avo.",f."ti,"ryat
edge
8.
8.1
8.2
8.3
8.4
8.s
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rMP- 536/1381 ' noravAToR*s-642G.T." COMMERCIAL ( ICT ) ll
11.
10.8 The average pto power requirement of Rotavator was observed
22.17 kW in dryland operation and is within the recommended range.
Prime mover used was of36.1 kW pto power hence only 61.41%o power
of tractor is utilized.
10.9 The specification of propeller shaft does not conform to
15:4931-1999. Thisshould be modified according to BIS
requirement.
10.10 The dipsticks for oil level check, must be provided on
gear, reduction unit.
LITERATURE
The manufacturer has provided the single booklet containing the
specification of theimplement, operating instruction and the
information of repair and adjustments.However, this booklet needs
to be moilified by incorporating all relevantspecification, parts
list and service instructions as per IS: 8132-1999 for the
guidanceofusers and technical personnel.
TESTING AUTHORITY
APPLICANT'S COMMENTS
No comments received
(R.M.TIWARI)ASSI STANT ENGINEER (W/S)
(P.K.CHOPRA)SENIOR AGRICULTURAL ENGINEER \'elvir-
(A.N.MESHRAM). DIRECTOR -
Test report compiled by Sh. S. A. Hinge, (S.T.A.)
NORT}IERN REGION FARM MACHTNERY TRAINING AND TESTTNG INSTITUTE,
HISSAR
