Manufactured by PRS Bearings, the PSA20.644 is a precision PSA20 Series Four-Point Contact Ball Slewing Bearings. You may consider it as an interchangeable alternative and replacement for INA VSA200644, SKF RKS.061.20.0644, IMO 11-200641, Mijnsbergen E.750.20.00.B, Rothe Erde 061.20.0644, Rollix 31-0641-01. Key dimensional parameters include a mm bore diameter, a mm outer diameter, and a mm overall width. With matching boundary dimensions, 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.
PSA20.644 - PSA20 Series Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Direct Interchange | INA VSA200644, SKF RKS.061.20.0644, IMO 11-200641, Mijnsbergen E.750.20.00.B, Rothe Erde 061.20.0644, Rollix 31-0641-01 |
|---|---|
| Overview | |
| Basic Model | PSA20.644 |
| Weight | 52 kg |
| Mounting Dimensions | |
| Outer Ring O.D. (Da) | 742.3 mm |
| Inner Ring I.D. (di) | 572 mm |
| Mounting Holes | |
| Outer Ring Hole Pitch Dia. (La) | 685 mm |
| Inner Ring Hole Pitch Dia. (Li) | 598 mm |
| No. of Outer Ring Holes (na) | 32 |
| No. of Inner Ring Holes (ni) | 36 |
| Gear Parameters | |
| Pitch Circle Dia. (do) | 732 mm |
| Module (m) | 6 |
| No. of Teeth (z) | 122 |
PSA20.644 742.3 mm 572 mm 685 mm 598 mm 32 mm 36 mm Frequently Asked Questions about PSA20.644 PSA20 Series Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Certainly. While the standard PSA20.644 is pre-filled with high-grade industrial lubricant, PRS Bearings can provide custom fills, including food-grade (NSF H1), high-temperature, or extreme-pressure greases tailored to your operational needs.
The PSA20.644 is manufactured by PRS Bearings using premium-grade bearing steel that undergoes rigorous quality control processes. The company adheres to international standards including ISO 9001 and IATF 16949, ensuring consistent material purity and structural integrity across all production batches.
PRS Bearings recommends storing the PSA20.644 in its original packaging in a clean, low-vibration warehouse. Maintaining a relative humidity below 60% and a stable room temperature ensures maximum shelf life.
Yes, while the standard PRS Bearings PSA20.644 meets ISO P0 (ABEC-1) levels, PRS Bearings also manufactures high-precision variants in P6 (ABEC-3) and P5 (ABEC-5) for applications requiring minimal runout and extreme rotational accuracy.