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Deep groove ball bearings are particularly versatile. They are suitable for high and very high speeds, accommodate radial and axial loads in both directions and require little maintenance. Because deep groove ball bearings are the most widely used bearing type, they are available from SKF in many designs, variants and
w80a. Open. DEEP GROOVE BALL BEARINGS - MINIATURE. Consolidated. Dimensions. Approx. Interchange. No. (Metric). Wgt. (lbs.) (Old No.) d. D. B. ADR. ISC. Nachi. NMB. NTN. RMB. SKF. 681. AX-1. 1. 3. 1 .0001. AX-1. 681. -. L-310. 681. UL103. AX-1. MR-31X. -. 1. 3. 1.5 .0001. -. MR31. -. L-310W51. -. -. -. 691. -. 1. 4.
Principal dimensions, Basic load ratings, Fatigue load limit, Speed ratings, Designations. dynamic, static, Reference speed, Limiting speed, Bearing, Snap ring. d, D, B, C, C, C0, Pu. mm, kN, kN, r/min
4. 7. Deep Groove. Ball Bearings. 3. 5. 1. Prefix. R. MRC inch series. W. Stainless. 2. Seals Shields. FF. MRC shield designation SKF Z. Metal backed one side of bearing (also SKF 2Z). RS2. As RS1 but of Fluorocarbon rubber for. On bearings W618__ and W619__ under 30mm on the O/D LT10 (Esso. Beacon 325).
d, 8, mm. D, 16, mm. B, 4, mm. d1, ≈, 10.5, mm. D1, ≈, 13.5, mm. r1,2, min. 0.2, mm. Abutment dimensions. da, min. 9.4, mm. Da, max. 14.6, mm. ra, max. 0.2, mm. Calculation data. Basic dynamic load rating, C, 0.819, kN. Basic static load rating, C0, 0.3, kN. Fatigue load limit, Pu, 0.012, kN. Reference speed, 90000, r/min.