Manufactured by CHG Bearing, the NN3068K/W33P5 is a precision Double Row Cylindrical Roller Bearings. Key dimensional parameters include a 340 mm bore diameter, a 520 mm outer diameter, and a 133 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.
NN3068K/W33P5 - Double Row Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN3068K/W33P5 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Double Row Cylindrical Roller Bearing |
| Number of Rows | Double Row |
| Tolerance Class | P5 |
| Dimensions | |
| Bore Diameter (d) | 340 mm |
| Width (B) | 133 mm |
| Outer Diameter (D) | 520 mm |
| Bore Diameter Tolerance | 0 – +0.030 mm |
| Outside Diameter Tolerance | -0.028 – 0 mm |
| Width Tolerance | -0.40 – 0 mm |
| Enveloping Circle Diameter Fw | 473 mm |
| Inner Ring Chamfer | 5 min mm |
| Outer Ring Chamfer | 5 min mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 1800 kN |
| Basic Static Load Rating C0 (kN) | 3460 kN |
| Material | |
| Mass (kg) | 102 kg |
| Ring Material | Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | Brass |
| Lubrication Groove Width | 16.7 mm |
| Lubrication Holes (qty × Ø mm) | 3 × Ø9 |
NN3068K/W33P5 520 mm 340 mm 133 mm 473 mm Frequently Asked Questions about NN3068K/W33P5 Double Row Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Sourcing NN3068K/W33P5 directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Double Row Cylindrical Roller Bearings.
Engineered according to international ISO boundary plans, CHG Bearing supplies NN3068K/W33P5 with a precision bore diameter (d) of 340 mm, an outside diameter (D) of 520 mm, and a nominal ring width (B) of 133 mm. This configuration yields an effective cross-sectional wall thickness of 90.0 mm and an envelope ratio (D/d) of 1.53, delivering compact rigidity for OEM machinery housings.
The CHG Bearing NN3068K/W33P5 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
Model NN3068K/W33P5 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 340 mm) and steep thermal gradients between inner and outer rings.
