21 SeriesInternal gearRotek L9-49N9Z / L6-49N9Z
21N.1255.29.000 Slewing Ring Bearing
21 Series slewing ring bearing, internal gear, 1,400 mm OD × 1,112 mm ID. Interchangeable with Rotek L9-49N9Z / L6-49N9Z.
Specifications
| SlewPro part number | 21N.1255.29.000 |
|---|---|
| Series | 21 Series |
| Bearing design | Four-point contact, single-row ball |
| Gear | Internal gear |
| Raceway diameter | 1,255 mm (49.41 in) |
| Outside diameter | 1,400 mm (55.12 in) |
| Inside diameter | 1,111.5 mm (43.76 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 | 55.12 in (1400.0 mm), 51.85 in (1317.0 mm), 49.55 in (1258.6 mm), 49.47 in (1256.5 mm), 49.35 in (1253.5 mm), 49.27 in (1251.5 mm), 43.76 in (1111.5 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 | 111 |
| Pitch diameter | 44.4 in |
| Pressure angle | 20° |
| Material | Steel, 50Mn |
| Approx. weight | 2,244 lb (1,018 kg) |
Dimensions from our 3D model; confirm against the certified drawing. Load ratings and life calculations available from our engineers.
Crosses to
| Rotek | L9-49N9Z / L6-49N9Z |
|---|
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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