Spherical Bearings by PTI

New PTI SRB – Spherical Roller Bearings:

SRE = Type E Dimensional EquivalentSR2200 = 2000 Series Dimensional Equivalent

PTI SRE and SR2200 Spherical Roller Bearing Design / Applications

“Fills the Product Gap” Between Ball Bearings and Split Blocks Double-row Spherical Roller Bearings Single Piece “Unitized” Housing Design

2000 Series and Spherical Type E Made for Medium to Heavy Loads Accommodates Low to Moderate Speeds Primarily used in North America

Ball Bearing - Light Duty Thru 3” Shaft Diameter

Spherical Bearing – Medium Duty1-1/2” thru 5” Shaft Diameter.

Split Block Spherical Bearing – Heavy Duty 1-1/2 thru 22+ shaft Diameter

SRE/SR2200 SeriesTarget Applications and Industries

• Bulk Material Handling• Mining• Aggregate


• Food (Grain Handling) Conveyors


• Bucket Elevators


• Wood Products


• Air Handling


Before we go further, it’s time for a few bearing fundamentals…..

Bearing Basics – Radial and Thrust Loads

Radial Load (Perpendicular to

Shaft)

Axial (Thrust) Load – Parallel to Shaft

Thrust Load

Radial Load

The equation for shaft expansion is:L = * L* T

Where : L = the change in length of the material = the coefficient of linear expansion of the materialL = the length between bearings T = the change in temperature in °F

Expansion of Shafting

Bearing MisalignmentStatic Misalignment Dynamic Misalignment

Dynamic misalignment due to a bent shaft or imbalanced load creates a condition of oscillation between the inner unit and housing which loosens swivel torque and creates wear and

induces greater vibration within the system.

Tapered Rollers vs Spherical Rollers

Tapered Roller Bearings (Traditional Type E) Can handle any combination of radial and thrust

load (including pure thrust) Minimal misalignment (fraction of a degree) No expansion capability

Spherical Roller Bearings (SR2200 Series and SRE) Need to have at least 2 pounds of radial load

for every pound of thrust load +/- 2 degrees misalignment Good expansion capability

…have two rows of symmetrical barrel rollers which can align freely in the spherical outer ring raceway, thus compensating for shaft deflections and misalignment of the pillow blocks.

Spherical roller bearings…


• Use Caution When Interchanging/Replacing Tapered Roller Bearing “Type E” Products in Applications with High Thrust Loads….

Tapered Roller Bearings

PTI SRE and SR2200 Roller Bearings

• Major Participants in the Marketo SR2200 Series (All Spherical)

Dodge S2000, Imperial Rex ZA Link-Belt PB22400 SKF SYR, SYR-N (ConCentra) Browning SPB1000 (Discontinued) SealMaster USRB Jones JA IDC-Select CA Moline M2000, M3000 Even-Lock QM (now Timken) Blue Brute PTI

o SRE Series Dodge S2000-E & Imperial-E Rex ZEP Link-Belt PEB22400 SKF SYE, SYE-N (ConCentra) SealMaster USRB (SleeveLoc SPB2000 discontinued) Browning SPB1000 (discontinued) Jones JEP IDC-Select CEP PPI PTI

― Tapered Type E Series• Dodge Type E, EXL• Sealmaster RPB• Browning PB920• Moline Type E• Royersford Type E• Hub City Type E

New PTI SRB – Nomenclature

New PTI SRB Competitive Interchanges


SRE = Type E Dimensional EquivalentSR2200 = 2000 Series Dimensional Equivalent

SRE/SR2200 Project Scope

• 48 housing patterns (13 SRE, 35 SR2200)• 10 bearing series, 21 shaft sizes (1-7/16” – 5”)• Spherical roller bearings finished and in stock• Seals in stock• ~85% of housings in stock (balance due 3/23)

WSTU housings due end of April (shipping 3/23) SREPB2 (7 Sizes)

SR2PB2 (8 Sizes)

SR2PB4 (6 Sizes)

SREPB4 (6 Sizes)

SR2WSTU (5 Sizes)

SR2FC (8 Sizes)

SR2FB4(8 Sizes)

SRE and SR2200 Series Project Update• PTI Assembly Procedure

New PTI SRB – Single and Dual Locking Collar Designs

• Sizes through 4” have single locking collar Dual locking collars available on 2-7/16”, 2-15/16”, 3-7/16” and 3-15/16”

• Sizes above 4” have dual locking collars (like 5000 series)

Dual collar unit, standard above 4”; also available for 207, 215, 307 and 315 shafts

Single collar unit, standard through 4”

New PTI SRB – Advanced Sealing OptionsOptional Teflon Labyrinth for High Speeds

Harsh Duty Seal Package:• Green = gasket seal (rubber or cork)

• Yellow = bolt-on stamped steel end cover• Red = Double lip seal

• Gray = dust cover

• Popular European Design

• PTI is Interchangeable with Competitive Brands

• Compact Design

• Side Mount

• Easy Adjustment

• 5 Sizes, 25-50mm and 7/8” - 2” Bore

• Up to 80mm (3.15)” of Travel

• Product is In Stock and Ready to Ship

New PHUSE Take-Up Frames

New Wide Slot Take Up Frames

• Fabricated from Heavy Duty Plate Steel• Interchangeable with Competitive Brands• Side Mount• Travel Lengths of 6”, 12”, 18”, & 24”• Compact Design• Shaft Sizes: ¾” - 2-7/16”, 20mm – 60mm• Compatible with PTI WS-200 series bearings and

other Wide-Slot Ball Bearings

PTI TUWS Frame Interchange GuidePTI Frame PPI Frame Martin Frame

TUWS300 PWS100 MWS300TUWS308 PWS108 MWS308TUWS400 PWS200 MWS400TUWS502 PWS208 MWS502

PTI/PPI TUWS Comparison

• Threaded Plate (PTI) VS. Welded Nut (PPI)• Mounting Bolt Clearance• Refined Rail Thickness Tolerance• PTI Unit Level Mounting• Locking Nut Provided With PTI Unit• Welded (PPI) VS Screw Mounted (PTI) Rails• Rounded Edges vs Sharp Edges

Engineering

Spherical Bearings by PTI