Bearing tolerances and clearances
- Tolerances: Normal, P6, P5
- Internal clearance: Single row track rollers, Double row track rollers
Yoke track roller (Cam roller) LR203-2RS, single row, seals on both side, crowned running surface
chmotion LR203-2RS Yoke Track Roller (Cam Follower)
Precision Cam Follower with Crowned Running Surface & Double Seals
Key Advantages
Crowned running surface: Compensates for misalignment and absorbs impact loads for smoother, more reliable operation in demanding cam and track systems.
Double-contact seals (2RS): Effective protection against dust, debris, and moisture, extending service life in harsh industrial environments.
High load capacity: Robust design supports up to 11.6 kN static load (F0r) and 8.15 kN dynamic radial load (Fr).
Precision P6 (ABEC-3) grade: Ensures high running accuracy, minimal vibration, and consistent performance in precision motion control applications.
Ready-to-mount with integrated stud: Simplifies installation, reducing assembly time and cost.
Critical Specifications
Bore diameter (d): 17 mm
Outside diameter (D): 47 mm
Roller width (B): 12 mm
Basic dynamic load rating (C): 8.84 kN
Basic static load rating (C0): 4.25 kN
Max static radial load (F0r): 11.6 kN
Weight: ≈0.108 kg
Temperature range: -20°C to +120°C (-4°F to +248°F)
Design Features
Material: High-carbon chromium steel (100Cr6/52100) rings and balls for durability.
Retainer: Lightweight and quiet Nylon (PA66) cage.
Sealing: 2RS rubber contact seals on both sides for robust contamination exclusion.
Lubrication: Pre-lubricated with high-quality Shell Alvania EP2 grease.
Tolerances: P6 (ABEC-3) dimensional and running accuracy standards.
Industrial Applications
Cam drives and indexing mechanisms
Conveyor system guide rollers
Material handling and packaging machinery
Printing and textile equipment
Automation and linear guide support rollers
Cross-Reference & Interchangeability
Direct or functional equivalents from other major brands include:
INA: LR203 NPPU
FAG / SKF: LR203-2RSR
NSK: 361203R, LB6203-2RSR
| Crowned running surface | Design |
| d | 17 mm | Bore diameter |
| D | 47 mm | Outside diameter |
| B | 12 mm | Roller width |
| R | 500 | Outer ring profile |
| rmin | 0.6 mm | Chamfer dimension |
| C | 8.84 kN | Basic dynamic load rating |
| C0 | 4.25 kN | Basic static load rating |
| Pu | 0.18 kN | Fatigue load limit |
| Fr | 8.15 kN | Maximum dynamic radial load |
| F0r | 11.6 | Maximum static radial load |
| nD G | 9000 r/min | Limiting Speed |
| ≈m | 0.108 kg | Weight |
| Gr | 0.003~0.018 mm | Radial clearance (mm) |
| P6 (ABEC-3) | Dimensional tolerances | |
| P6 (ABEC-3) | Radial run-out |
| 100Cr6 | 52100 | GCr15 | Ring and ball material | |
| Nylon (PA66) | Retainer material | |
| Seals | Sealing solution | |
| Shell Alvania EP2 | Grease | |
| -20°C to +120°C | Temperature range °C | |
| -4°F to +248°F | Temperature range °F |
| INA | FAG | SKF | NSK |
| LR203 NPPU LR203-2RSR | LR203-2RSR | 361203R | LB6203-2RSR |
Bearing tolerances and clearances
