Engineered & supported in Hudson, Ohio since 2012330-633-7735 · info@slewpro.com
Potesta & Company
SlewPro
21 SeriesExternal gearRothe Erde 231.20.0600.013

21E.0644.19.004 Slewing Ring Bearing

21 Series slewing ring bearing, external gear, 743 mm OD × 534 mm ID. Interchangeable with Rothe Erde 231.20.0600.013.

Specifications

SlewPro part number21E.0644.19.004
Series21 Series
Bearing designFour-point contact, single-row ball
GearExternal gear
Raceway diameter644 mm (25.35 in)
Outside diameter742.9 mm (29.25 in)
Inside diameter533.9 mm (21.02 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 bore645.4 mm (25.41 in)
Inner ring outside diameter642.6 mm (25.30 in)
All diameters on drawing29.25 in (742.9 mm), 25.41 in (645.4 mm), 25.30 in (642.6 mm), 23.82 in (605.0 mm), 21.02 in (533.9 mm)
All heights on drawing2.20 in (55.9 mm), 1.79 in (45.5 mm), 0.47 in (11.9 mm), 0.41 in (10.4 mm)
Gear module6
Number of teeth122
Pitch diameter28.819 mm
Pressure angle20°
Approx. weight112 lb (51 kg)

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

Crosses to

Rothe Erde231.20.0600.013

Interchange based on published dimensions; our engineers confirm fit before quoting.

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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