Moline Bearing
2-1/2 TYPE E 4-BOLT FLANGE WITH SINGLE COLLAR INSERT & LABYRINTH SEALS
Pricing and availability are confirmed by our sales team after a quote request is submitted. Add this item to your quote and we'll respond with lead time and pricing within one business day.
Type E·4-Bolt Flange

2-1/2 TYPE E 4-BOLT FLANGE WITH SINGLE COLLAR INSERT & LABYRINTH SEALS

19311208AL

The 2 1⁄2" Type E 4-Bolt Flange Non-Expansion Bearing with Single Collar Insert and Labyrinth Seals is Moline Bearing Company part 19311208AL: a mounted tapered roller bearing with a balanced steel and Teflon labyrinth seal and a single collar set screw locking insert in a painted solid Class 30 cast iron housing. Dynamic load rating 11,600 lbf, maximum speed 2,420 rpm. Made in the USA, shipped assembled, sealed and lubricated, ready to install.

  • Custom Colors, Powder Coating, Stainless Steel Coating, Nickel Plating, Epoxy Coatings, and Teflon Coatings can be quoted upon request.
Part Number
19311208AL
Series
Type E
Housing Type
4-Bolt Flange
Shaft Size
2 1⁄2" (2.5″ / 63.5 mm)
Expansion / Non-Expansion
Non-Expansion
Weight
21 lb
Insert Number
39250DE-40634 | NPE39250DEE-401C4
PDF Catalog
Static Load
54000 lbf
Dynamic Load
11600 lbf
Grease Fitting Size
1/8-27 NPT
Set Screw Torque
290 in-lbs
Radial Slip Resistance
9500 lbf
Open End Cap Part #
18621208
Closed End Cap Part #
18620207
Angular Misalignment (Degrees)
0.05
Product Family
Mounted Roller Bearing
Rolling Element
Tapered Roller
Housing Construction
Solid
Insert Material
Steel
Locking Style
Set Screw Locking
Lubrication Type
Lithium Complex Grease
Housing Material
Class 30 Cast Iron
Seal Type
Balanced Steel and Teflon Labyrinth Seal
Seal Type Material
Steel and Teflon
Seal Type Operating Range (F)
0° - 350°
Seal Type Maximum Speed (RPM)
2420
Housing Coating
Standard Painted
Collar Type
Single Collar
Type E 4-Bolt Flange dimensional drawing
ALength Through Bore4
BHousing Base Length6 7⁄8
CHousing Height3 9⁄16
DBolt Hole Center to Center5 3⁄8
EMounting Clearance3⁄16
FBolt Diameter [Nominal]5⁄8
HHousing Base Height1 1⁄2
JUpper Housing Diameter5 3⁄4
LDrive Collar Outside Diameter [OD]4
—Housing Base Width6 7⁄8

Product Variants

2-1/2 TYPE E 4-BOLT FLANGE
2-1/2 TYPE E 4-BOLT FLANGE
19311208
2 1⁄2"
2-1/2 TYPE E 4-BOLT FLANGE WITH LABYRINTH SEALS
2-1/2 TYPE E 4-BOLT FLANGE WITH LABYRINTH SEALS
19311208L
2 1⁄2"
2-1/2 TYPE E 4-BOLT FLANGE WITH SINGLE COLLAR INSERT
2-1/2 TYPE E 4-BOLT FLANGE WITH SINGLE COLLAR INSERT
19311208A
2 1⁄2"

2-1/2 TYPE E 4-BOLT FLANGE WITH SINGLE COLLAR INSERT & LABYRINTH SEALS

The 2 1⁄2" Type E 4-Bolt Flange Non-Expansion Bearing with Single Collar Insert and Labyrinth Seals is Moline Bearing Company part 19311208AL: a mounted tapered roller bearing in the non-expansion position. It is fitted with a balanced steel and Teflon labyrinth seal and a single collar, set screw locking insert, in a solid Class 30 cast iron housing with a standard painted finish.

It carries a genuine Timken® Enhanced DEE tapered roller insert: case-hardened rollers and races made from vacuum-degassed steel, with a double-extended inner race, rated for high radial and thrust loads and slight angular misalignment. The housing is machined to close tolerances, and the unit is made, machined and assembled in the USA.

It ships assembled, adjusted, sealed and pre-lubricated with lithium complex grease, so it mounts straight from the box with no adjustment or cleaning.

Ratings

The dynamic load rating is 11,600 lbf and the static load rating is 54,000 lbf. Maximum speed is 2,420 rpm with the balanced steel and Teflon labyrinth seal fitted, and the seal is rated for 0° to 350°F. The insert accepts up to 0.05° of angular misalignment. Set screws torque to 290 in-lbs, and the locking system holds 9,500 lbf of radial load before the insert slips on the shaft. The grease fitting is 1/8-27 NPT.

Mounting dimensions

  • Bolt hole centers: 5 3⁄8 in
  • Bolt size: 5⁄8 in
  • Flange: 6 7⁄8 × 6 7⁄8 in
  • Length through bore: 4 in
  • Shipping weight: 21 lb

The full dimension table and the datasheet drawing are above.

This configuration

  • Non-Expansion. This position holds the shaft axially. Use one non-expansion bearing per shaft to locate it lengthwise.
  • Balanced Steel and Teflon Labyrinth Seal. A labyrinth seal combining steel with a Teflon element, adding chemical resistance and a wider temperature range to a non-contact design.
  • Single Collar. One locking collar secures the insert to the shaft. Standard for unidirectional rotation and steady loads.
  • Set Screw Locking. Set screws in the collar bite into the shaft. Simple and widely used; best where rotation is in one direction.

The same size is also built as 19311208 (double collar, standard V-Guard contact seal), 19311208L (double collar), 19311208A (standard V-Guard contact seal).

Replacement parts

The bearing insert is 39250DE-40634 or NPE39250DEE-401C4. Open end cap 18621208 and closed end cap 18620207 fit this housing.

Applications

Type E units are specified where radial loads, thrust loads or both are high and misalignment is minimal. Moline Bearing Company lists conveying, screening, cranes, mining, forestry, oil, gas, power generation and aggregate among the industries that run them. It is dimensionally interchangeable with comparable Type E units, including Moline's Split E1000, ME2000 and ME3000 lines.