21 SeriesExternal gearRothe Erde 231.20.0800.013
21E.0844.20.000 Slewing Ring Bearing
21 Series slewing ring bearing, external gear, 950 mm OD × 734 mm ID. Interchangeable with Rothe Erde 231.20.0800.013.
Specifications
| SlewPro part number | 21E.0844.20.000 |
|---|---|
| Series | 21 Series |
| Bearing design | Four-point contact, single-row ball |
| Gear | External gear |
| Raceway diameter | 844 mm (33.23 in) |
| Outside diameter | 950.5 mm (37.42 in) |
| Inside diameter | 734.1 mm (28.90 in) |
| Overall height | 55.9 mm (2.20 in) |
| Outer ring height | 45.5 mm (1.79 in) |
| Inner ring height | 45.5 mm (1.79 in) |
| Outer ring bore | 845.6 mm (33.29 in) |
| Inner ring outside diameter | 842.5 mm (33.17 in) |
| All diameters on drawing | 37.42 in (950.5 mm), 33.29 in (845.6 mm), 33.17 in (842.5 mm), 31.69 in (804.9 mm), 28.90 in (734.1 mm) |
| All heights on drawing | 2.20 in (55.9 mm), 1.79 in (45.5 mm), 0.45 in (11.4 mm), 0.41 in (10.4 mm) |
| Gear module | 8 |
| Number of teeth | 117 |
| Pitch diameter | 36.85 mm |
| Pressure angle | 20° |
| Approx. weight | 149 lb (68 kg) |
Dimensions from our 3D model; confirm against the certified drawing. Load ratings and life calculations available from our engineers.
Crosses to
| Rothe Erde | 231.20.0800.013 |
|---|
Interchange based on published dimensions; our engineers confirm fit before quoting.
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.


