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

21N.0737.19.000 Slewing Ring Bearing

21 Series slewing ring bearing, internal gear, 848 mm OD × 650 mm ID.

Specifications

SlewPro part number21N.0737.19.000
Series21 Series
Bearing designFour-point contact, single-row ball
GearInternal gear
Raceway diameter737 mm (29.02 in)
Outside diameter848.1 mm (33.39 in)
Inside diameter650.2 mm (25.60 in)
Overall height55.9 mm (2.20 in)
Outer ring height45.5 mm (1.79 in)
Inner ring height45.5 mm (1.79 in)
Outer ring bore745.5 mm (29.35 in)
Inner ring outside diameter742.4 mm (29.23 in)
All diameters on drawing33.39 in (848.1 mm), 30.83 in (783.1 mm), 29.42 in (747.3 mm), 29.35 in (745.5 mm), 29.23 in (742.4 mm), 29.17 in (740.9 mm), 25.60 in (650.2 mm)
All heights on drawing2.20 in (55.9 mm), 1.79 in (45.5 mm), 0.47 in (11.9 mm)
Diametral pitch4
Number of teeth104
Pitch diameter26 in
Pressure angle20°
MaterialSteel, 50Mn
Approx. weight114 lb (52 kg)

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

21 Series slewing ring

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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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