NJ211E.M1 Single Row Cylindrical Roller Bearing 55x100x21mm Brass Cage For Gearbox Transmission Shaft
NJ211E.M1 is high-load single row cylindrical roller bearing with overall dimensions 55×100×21 mm, manufactured from high-purity GCr15 bearing steel. Adopting E upgraded roller profile and solid machined brass M1 cage, it guides cylindrical rollers evenly and steadily.
Classic NJ structural layout supports heavy radial loads and single-direction axial positioning simultaneously. Separable inner and outer rings greatly simplify mounting, disassembly and maintenance. Open unsealed design adapts to oil bath / forced circulating lubriion inside closed gearbox casings, with excellent heat dissipation and lubricant circulation performance. Widely applied in gear reducers, vehicle transmissions, electric motors and various medium-high speed power transmission equipment.
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| Parameter Item | Specifiion |
|---|---|
| Model | NJ211E.M1 |
| Bearing Type | Single Row Cylindrical Roller Bearing (NJ Structure) |
| Inner Diameter (d) | 55 mm |
| Outer Diameter (D) | 100 mm |
| Width (B) | 21 mm |
| Min Fillet Radius r min | 1.5 mm |
| Basic Dynamic Load Cr | 99 kN |
| Basic Static Load C0r | 95 kN |
| Limiting Speed (Grease Lubriion) | 5800 rpm |
| Limiting Speed (Oil Lubriion) | 7100 rpm |
| Seal Type | Open / No Seal (Open Type) |
| Roller Design | E: Enhanced optimized roller geometry, higher load capacity |
| Cage | M1: Solid Machined Brass Cage |
| Structural Feature | NJ: Outer ring double ribs, inner ring single rib; bears radial load + one-way axial load |
| Internal Clearance | Standard CN (C3 optional) |
| Material | GCr15 Chrome Bearing Steel |
| Approx Net Weight | 0.74 kg |
| Operating Temperature | -30℃ ~ +120℃ |
- NJ exclusive structure: Mainly bears heavy radial loads, supports one-way axial force for shaft positioning
- E optimized internal structure: Larger load volume, outstanding fatigue resistance for alternating heavy loads
- M1 solid brass cage: Wear-resistant, high strength, stable running under vibration & impact working conditions
- Open no-seal design: Perfect for enclosed gearbox oil lubriion, efficient heat dissipation
- Separable inner & outer rings: Convenient inspection, replacement and overhaul
- Lower friction coefficient, allows higher rotating speed than spherical roller bearings
- Industrial hard tooth surface reducers, gearboxes, transmission intermediate shafts
- Automobile manual gearboxes, truck powertrain components
- Three-phase asynchronous motors, generators, centrifugal water pumps
- Construction machinery, farm harvesting equipment transmission assemblies
- Air compressors, textile machinery, machine tool auxiliary spindle supports
*Check matched bearing models to complete your mechanical assembly.
- 30 years professional bearing industry experience
- ISO certified strict quality inspection
- Flexible OEM & private label customization
- 3-5 days fast delivery for stocked bearings
- Full bearing series, universal interchangeable size
- Factory direct price & reliable after-sales service
*Contact us anytime for technical parameter consultation & selection guidance.
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