21 SeriesInternal gear
21N.0320.12.000 Slewing Ring Bearing
21 Series slewing ring bearing, internal gear, 410 mm OD × 264 mm ID.
Specifications
| SlewPro part number | 21N.0320.12.000 |
|---|---|
| Series | 21 Series |
| Bearing design | Four-point contact, single-row ball |
| Gear | Internal gear |
| Raceway diameter | 320 mm (12.60 in) |
| Outside diameter | 410 mm (16.14 in) |
| Inside diameter | 263.9 mm (10.39 in) |
| Overall height | 40.9 mm (1.61 in) |
| Outer ring height | 31 mm (1.22 in) |
| Inner ring height | 35.1 mm (1.38 in) |
| Outer ring bore | 323.1 mm (12.72 in) |
| Inner ring outside diameter | 317 mm (12.48 in) |
| All diameters on drawing | 16.142 in (410.0 mm), 13.98 in (355.1 mm), 12.72 in (323.1 mm), 12.48 in (317.0 mm), 10.748 in (273.0 mm), 10.39 in (263.9 mm) |
| All heights on drawing | 1.61 in (40.9 mm), 1.38 in (35.1 mm), 1.22 in (31.0 mm), 0.94 in (23.9 mm), 0.47 in (11.9 mm), 0.04 in (1.0 mm) |
| Diametral pitch | 12 |
| Number of teeth | 126 |
| Pitch diameter | 10.5 in |
| Pressure angle | 20° |
| Material | Steel, 42CrMo |
| Approx. weight | 28.6 lb (13 kg) |
Dimensions from our 3D model; confirm against the certified drawing. Load ratings and life calculations available from our engineers.
CAD & documents
Get this bearing
Standard lead time 14–16 weeks; expediting available for an additional charge. Pricing quoted within 1–2 business days. Matching pinions available.
Request a QuoteTalk to an engineer
Need help selecting the right part? Our engineers will size it, cross it, and quote it — usually within 1–2 business days.
Not in the catalog? We design to your application, with no engineering charge.