Engineered & supported in Hudson, Ohio since 2012330-633-7735 · info@slewpro.com
Potesta & Company
SlewPro
21 SeriesPlain (no gear)INA VLU200544

21P.0544.20.003 Slewing Ring Bearing

21 Series slewing ring bearing, plain (no gear), 648 mm OD × 434 mm ID. Interchangeable with INA VLU200544.

Specifications

SlewPro part number21P.0544.20.003
Series21 Series
Bearing designFour-point contact, single-row ball
GearPlain (no gear)
Raceway diameter544 mm (21.42 in)
Outside diameter648 mm (25.51 in)
Inside diameter434 mm (17.09 in)
Overall height55.9 mm (2.20 in)
Outer ring height47.5 mm (1.87 in)
Inner ring height47.5 mm (1.87 in)
Outer ring bore545.5 mm (21.48 in)
Inner ring outside diameter542.5 mm (21.36 in)
All diameters on drawing25.512 in (648.0 mm), 23.05 in (585.5 mm), 21.476 in (545.5 mm), 21.358 in (542.5 mm), 19.78 in (502.4 mm), 17.087 in (434.0 mm)
All heights on drawing2.20 in (55.9 mm), 1.87 in (47.5 mm), 0.47 in (11.9 mm)
MaterialSteel, 50Mn
Approx. weight76.0 lb (34 kg)

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

Crosses to

INAVLU200544

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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