21 SeriesInternal gearRotek L9-57N9Z
21N.1455.29.000 Slewing Ring Bearing
21 Series slewing ring bearing, internal gear, 1,600 mm OD × 1,314 mm ID. Interchangeable with Rotek L9-57N9Z.
Specifications
| SlewPro part number | 21N.1455.29.000 |
|---|---|
| Series | 21 Series |
| Bearing design | Four-point contact, single-row ball |
| Gear | Internal gear |
| Raceway diameter | 1,455 mm (57.28 in) |
| Outside diameter | 1,599.9 mm (62.99 in) |
| Inside diameter | 1,314.4 mm (51.75 in) |
| Overall height | 89.9 mm (3.54 in) |
| Outer ring height | 71.1 mm (2.80 in) |
| Inner ring height | 71.1 mm (2.80 in) |
| All diameters on drawing | 62.99 in (1599.9 mm), 59.72 in (1516.9 mm), 57.42 in (1458.5 mm), 57.34 in (1456.4 mm), 57.22 in (1453.4 mm), 57.14 in (1451.4 mm), 51.75 in (1314.4 mm) |
| All heights on drawing | 3.54 in (89.9 mm), 2.80 in (71.1 mm), 0.83 in (21.1 mm) |
| Diametral pitch | 2.5 |
| Number of teeth | 131 |
| Pitch diameter | 52.4 in |
| Pressure angle | 20° |
| Material | Steel, 50Mn |
| Approx. weight | 3,004 lb (1,363 kg) |
Dimensions from our 3D model; confirm against the certified drawing. Load ratings and life calculations available from our engineers.
Crosses to
| Rotek | L9-57N9Z |
|---|
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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