Bearing tolerances and clearances
- Tolerances: Normal, P6, P5
- Internal clearance: Single row track rollers, Double row track rollers
Yoke track roller (Cam roller) LR604-2RS, single row, seals on both side, crowned running surface
chmotion LR604-2RS Miniature Yoke Track Roller
4mm Bore, 13mm OD Cam Follower with Seals & Crowned Running Surface
Key Advantages
Ultra-compact size: 4mm bore x 13mm OD design for space-constrained automation and miniaturized equipment.
Integrated 2RS contact seals: Effective protection against dust and contaminants, extending service life in demanding conditions.
Crowned (R500) running surface: Compensates for minor misalignments, ensuring smooth operation on tracks and guideways.
High load-to-size ratio: Supports up to 0.7 kN dynamic/static radial load (Fr/F0r) despite its miniature footprint.
Precision P6 (ABEC-3) grade: Ensures low vibration and high running accuracy for sensitive applications.
Critical Specifications
Bore diameter (d): 4 mm
Outside diameter (D): 13 mm
Roller width (B): 4 mm
Outer ring profile (R): 500 (Crowned)
Basic dynamic load rating (C): 0.92 kN
Maximum radial load (Fr/F0r): 0.7 kN
Limiting speed (nD G): 24,000 r/min
Radial clearance (Gr): 0.002 ~ 0.013 mm
Weight: ≈0.0048 kg
Design Features
High-grade materials: 100Cr6 bearing steel rings and balls with a durable PA66 nylon retainer.
Effective sealing: 2RS rubber seals on both sides for robust protection.
Ready-to-install: Pre-lubricated with Shell Alvania EP2 grease for immediate use.
Wide operating range: Temperature range from -20°C to +120°C (-4°F to +248°F).
Compliance: Manufactured to meet industry standards for performance and reliability.
Industrial Applications
Miniature linear guides and compact automation assemblies
Small-scale robotics and precise actuation mechanisms
Medical device components and laboratory automation
Optical positioning systems and精密仪器
Conveyor guides in electronics assembly
| Crowned running surface | Design |
| d | 4 mm | Bore diameter |
| D | 13 mm | Outside diameter |
| B | 4 mm | Roller width |
| R | 500 | Outer ring profile |
| rmin | 0.2 mm | Chamfer dimension |
| C | 0.92 kN | Basic dynamic load rating |
| C0 | 0.36 kN | Basic static load rating |
| Pu | 0.0186 kN | Fatigue load limit |
| Fr | 0.7 kN | Maximum dynamic radial load |
| F0r | 0.7 | Maximum static radial load |
| nD G | 24000 r/min | Limiting Speed |
| ≈m | 0.0048 kg | Weight |
| Gr | 0.002~0.013 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 |
| LR604 NPPU LR604-2RSR LR604-2RSR-HLC LR604-2RSR-HLW |
Bearing tolerances and clearances
