Engineered & supported in Hudson, Ohio since 2012330-633-7735 · info@slewpro.com
Potesta & Company
SlewPro
21 SeriesInternal gear

21N.0541.19.000 Slewing Ring Bearing

21 Series slewing ring bearing, internal gear, 648 mm OD × 447 mm ID.

Specifications

SlewPro part number21N.0541.19.000
Series21 Series
Bearing designFour-point contact, single-row ball
GearInternal gear
Raceway diameter541 mm (21.30 in)
Outside diameter648 mm (25.51 in)
Inside diameter447 mm (17.60 in)
Overall height56 mm (2.20 in)
Outer ring height46 mm (1.81 in)
Inner ring height46 mm (1.81 in)
Outer ring bore542 mm (21.34 in)
Inner ring outside diameter540 mm (21.26 in)
All diameters on drawing25.51 in (648.0 mm), 22.99 in (583.9 mm), 21.34 in (542.0 mm), 21.26 in (540.0 mm), 17.60 in (447.0 mm)
All heights on drawing2.205 in (56.0 mm), 1.81 in (46.0 mm), 1.10 in (27.9 mm), 0.47 in (11.9 mm)
Diametral pitch4
Number of teeth72
Pitch diameter18 in
Pressure angle20°
Approx. weight92.0 lb (42 kg)

Dimensions from our 3D model; confirm against the certified drawing. Load ratings and life calculations available from our engineers.

21 Series slewing ring

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 Quote

Talk 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.