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NU 321 ECP - Single row cylindrical roller bearing - Precision cylindrical roller bearing

Product modelNU 321 ECP
d105 mm
D225 mm
B49 mm
Limiting speed3800 r/min
Reference speed3200 r/min
D1≈189mm
F133mm
r1,2min.3mm
Chamfer dimension (r3,4)min.3mm
Allowable axial displacement (s)max.3.4mm
damax.129mm
dbmin.136mm
Damax.209.4mm
ramax.2.5mm
rbmax.2.5mm
Fatigue load limit(Pu)57kN
Minimum load factor(kr)0.15
Limit value (e)0.2
Axial load factor (Y)0.6
Weight8.5kg

Product Details

The NU 321 ECP is part of the Single row cylindrical roller bearing series within our Precision cylindrical roller bearing range. It is engineered for high-performance industrial use and delivers reliable operation under demanding working conditions.

Typical applications include: machine tool spindles, rolling mills, gearboxes and industrial pumps. For detailed dimensions and load ratings, please refer to the specification table above. Contact FIJ for bulk pricing, technical support or customized solutions.

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NU 321 ECP / Single row cylindrical roller bearing / Precision cylindrical roller bearing