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

21E.0994.20.000 Slewing Ring Bearing

21 Series slewing ring bearing, external gear, 1,089 mm OD × 864 mm ID.

Specifications

SlewPro part number21E.0994.20.000
Series21 Series
Bearing designFour-point contact, single-row ball
GearExternal gear
Raceway diameter994 mm (39.13 in)
Outside diameter1,089.4 mm (42.89 in)
Inside diameter863.6 mm (34.00 in)
Overall height55.9 mm (2.20 in)
Outer ring height45.5 mm (1.79 in)
Outer ring bore994.7 mm (39.16 in)
Inner ring outside diameter993.1 mm (39.10 in)
All diameters on drawing42.89 in (1089.4 mm), 39.16 in (994.7 mm), 39.10 in (993.1 mm), 37.57 in (954.3 mm), 34.00 in (863.6 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 teeth170
Pitch diameter42.5 in
Pressure angle20°
MaterialSteel, 50Mn
Approx. weight175 lb (79 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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