21 SeriesPlain (no gear)Rotek L4-17P9Z
21P.0421.13.001 Slewing Ring Bearing
21 Series slewing ring bearing, plain (no gear), 501 mm OD × 333 mm ID. Interchangeable with Rotek L4-17P9Z.
Specifications
| SlewPro part number | 21P.0421.13.001 |
|---|---|
| Series | 21 Series |
| Bearing design | Four-point contact, single-row ball |
| Gear | Plain (no gear) |
| Raceway diameter | 421 mm (16.57 in) |
| Outside diameter | 500.9 mm (19.72 in) |
| Inside diameter | 333 mm (13.11 in) |
| Overall height | 39.6 mm (1.56 in) |
| Outer ring bore | 397.5 mm (15.65 in) |
| Inner ring outside diameter | 444.5 mm (17.50 in) |
| All diameters on drawing | 19.72 in (500.9 mm), 17.50 in (444.5 mm), 16.64 in (422.7 mm), 16.58 in (421.1 mm), 16.52 in (419.6 mm), 15.65 in (397.5 mm), 13.11 in (333.0 mm) |
| All heights on drawing | 1.56 in (39.6 mm), 0.30 in (7.6 mm), 0.26 in (6.6 mm) |
| Material | Steel, 50Mn |
| Approx. weight | 27.7 lb (13 kg) |
Dimensions from our 3D model; confirm against the certified drawing. Load ratings and life calculations available from our engineers.
Crosses to
| Rotek | L4-17P9Z |
|---|
Interchange based on published dimensions; our engineers confirm fit before quoting.
CAD & documents
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Standard lead time 14–16 weeks; expediting available for an additional charge. Pricing quoted within 1–2 business days. Matching pinions available.
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