Manufactured by CHG Bearing, the 51244 is a precision Thrust Ball Bearings. Key dimensional parameters include a 220 mm bore diameter, a 300 mm outer diameter, and a 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.
51244 - Thrust Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 51244 |
| Brand | CHG® |
| Construction | Angular Contact Thrust Ball Bearing |
| Type | Double-Direction Angular Contact Thrust Ball Bearing |
| Characteristics | |
| Load Direction | Axial — Double Direction |
| Limiting Speed — Grease (r/min) | 1100 r/min |
| Limiting Speed — Oil (r/min) | 1500 r/min |
| Dimensions | |
| Bore Diameter (d) | 220 mm |
| Outer Diameter (D) | 300 mm |
| Contact Angle α (°) | N/A ° |
| Chamfer Dimension r (min.) | 2 mm |
| Dimension A | N/A mm |
| Bearing Height T | 96 mm |
| Dimension d1 | N/A mm |
| Dimension D12 | N/A mm |
| Dimension C | 48 mm |
| Dimension B | 24 mm |
| Chamfer Dimension r1 (min.) | 1 mm |
| Performance | |
| Basic Dynamic Axial Load Rating Ca (kN) | 213 kN |
| Basic Static Axial Load Rating C0a (kN) | 980 kN |
| Material | |
| Mass (kg) | 18.3 kg |
51244 300 mm 220 mm 96 mm Frequently Asked Questions about 51244 Thrust Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Quality starts with raw material selection: CHG Bearing crafts 51244 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
To safeguard CHG Bearing 51244 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (220 mm x 300 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Model 51244 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 220 mm) and steep thermal gradients between inner and outer rings.
In its sealed configuration (Open Type), CHG Bearing pre-charges 51244 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
