Manufactured by CHG Bearing, the NU220R is a precision Single Row Cylindrical Roller Bearings. Key dimensional parameters include a 100 mm bore diameter, a 180 mm outer diameter, and a 34 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
NU220R - Single Row Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NU220R |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Single Row Cylindrical Roller Bearing |
| Number of Rows | Single Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 100 mm |
| Width (B) | 34 mm |
| Outer Diameter (D) | 180 mm |
| Bore Diameter Tolerance | -0.020 – 0 mm |
| Outside Diameter Tolerance | -0.025 – 0 mm |
| Width Tolerance | -0.20 – 0 mm |
| Enveloping Circle Diameter Fw | 119 mm |
| Inner Ring Chamfer | 2.1 min mm |
| Outer Ring Chamfer | 2.1 min mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 250 kN |
| Basic Static Load Rating C0 (kN) | 306 kN |
| Material | |
| Mass (kg) | 3.52 kg |
| Ring Material | Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | Brass |
NU220R 180 mm 100 mm 34 mm 119 mm Frequently Asked Questions about NU220R Single Row Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Engineered according to international ISO boundary plans, CHG Bearing supplies NU220R with a precision bore diameter (d) of 100 mm, an outside diameter (D) of 180 mm, and a nominal ring width (B) of 34 mm. This configuration yields an effective cross-sectional wall thickness of 40.0 mm and an envelope ratio (D/d) of 1.8, delivering compact rigidity for OEM machinery housings.
When fitting NU220R over a 100 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
As standard production, CHG Bearing subjects NU220R to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
To safeguard CHG Bearing NU220R against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (100 mm x 180 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
