Engineered & supported in Hudson, Ohio since 2012330-633-7735 · info@slewpro.com
Potesta & Company
SlewPro
21 SeriesExternal gearRollix Defontaine 21 0541-01 ZZ

21E.0541.20.001 Slewing Ring Bearing

21 Series slewing ring bearing, external gear, 640 mm OD × 434 mm ID. Interchangeable with Rollix Defontaine 21 0541-01 ZZ.

Specifications

SlewPro part number21E.0541.20.001
Series21 Series
Bearing designFour-point contact, single-row ball
GearExternal gear
Raceway diameter541 mm (21.30 in)
Outside diameter640.1 mm (25.20 in)
Inside diameter434.1 mm (17.09 in)
Overall height55.9 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 drawing25.20 in (640.1 mm), 21.34 in (542.0 mm), 21.30 in (541.0 mm), 21.26 in (540.0 mm), 19.88 in (505.0 mm), 17.09 in (434.1 mm)
All heights on drawing2.20 in (55.9 mm), 1.81 in (46.0 mm), 0.47 in (11.9 mm)
Gear module6
Number of teeth105
Pitch diameter630 mm
MaterialSteel, 50 Mn
Approx. weight95.0 lb (43 kg)

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

Crosses to

Rollix Defontaine21 0541-01 ZZ

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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