Roller Bearing Features
NHBB manufactures cylindrical roller bearings in a wide range of sizes, designs and configurations. The tables and diagrams on this page illustrate some typical specifications for rings and rollers. We also have the capability to design and manufacture complex roller bearings with custom features, such as puller grooves, mounting flanges and anti-rotation devices. Please contact NHBB’s Applications Engineering department to discuss specific requirements for your application.
Roller Bearing Configurations
 TPLL |
 TPLU |
 TPSU |
 TPUS |
 TPU Inner |
 TPU Outer |
 TPUL |
 TPUU Inner |
 TPUU Outer |
Roller Tolerances
| Diameter & Length |
Examples |
Corner |
|
| Crown Drop |
Flat Length |
||
| 5mm | Min: .0001" Max: .0003" |
Min: .050" Max: .130" |
.012-.018" |
| 22mm | Min: .00070" Max: .00096" |
Min: .300" Max: .540" |
.030-.040" |
Roller Ring Standards
| Features | Standard |
|
GUIDE FLANGES: -Surface finish -Layback angle tolerance -Runout to ring face -Roller end clearance tolerance |
10 Ra 0.5°-1° 0.0003 in. 0.0010 in. |
ROLLER PATHS: -Surface finish -Straightness -Wall Thickness Variation to I.D./O.D. |
6 Ra .000050 in. .000300 in. |
Cage/Roller Retention Comparison
| Cage Style | Method of Manufacture |
Control of Roller Drop |
Reuse After Disassembly |
NDT Inspection | Manufacturing Complexity |
Roll Formed |
Prior to assembly, cage is "roll formed" to create retention. | Yields a relatively high roller drop as a function of roller diameter. |
Yes. | All methods. | Low. |
Line Staked |
After rollers are in place, line stake tool forms retention. | Tab is formed after assembly for close control of roller drop. | No. (Disassembly not possible.) |
Visual only. | Moderate. |
Fully Machined |
Roller retention is |
Yields a relatively high roller drop as a function of roller diameter. |
Yes. | All methods. | High. |