WD Bearing Group - Four Point Contact Ball Bearings

Unit of Measure

Items	QJ204	QJ304	QJ205	QJ305	QJ206
Bore Diameter	N/A 20 mm	N/A 20 mm	N/A 25 mm	N/A 25 mm	N/A 30 mm
Outside Diameter	N/A 47 mm	N/A 52 mm	N/A 52 mm	N/A 62 mm	N/A 62 mm
Overall Bearing Width	N/A 14 mm	N/A 15 mm	N/A 15 mm	N/A 17 mm	N/A 16 mm
Dynamic (Cr) Load Rating	N/A 23.5 kN	N/A 27.4 kN	N/A 26.7 kN	N/A 40.8 kN	N/A 36.3 kN
Minimum Dimension r	N/A 1 mm	N/A 1.1 mm	N/A 1 mm	N/A 1.1 mm	N/A 1 mm
Static (Cor) Load Rating	N/A 15.3 kN	N/A 18.1 kN	N/A 18.8 kN	N/A 28 kN	N/A 27.6 kN
Grease Limiting Speed	N/A 12000 rpm	N/A 11000 rpm	N/A 10000 rpm	N/A 9200 rpm	N/A 8600 rpm
Oil Limiting Speed	N/A 16000 rpm	N/A 15000 rpm	N/A 14000 rpm	N/A 13000 rpm	N/A 12000 rpm
Distance of Working Points a	N/A 23.5 mm	N/A 25.2 mm	N/A 270 mm	N/A 30.5 mm	N/A 32.6 mm
Minimum Shoulder Dimension da	N/A 25.5 mm	N/A 27 mm	N/A 30.5 mm	N/A 32 mm	N/A 35.5 mm
Maximum Shoulder Dimension Da	N/A 41.5 mm	N/A 45 mm	N/A 46.5 mm	N/A 55 mm	N/A 56.5 mm
Maximum Shoulder Dimension ra	N/A 1 mm
Approximate Mass	N/A 0.129 kg	N/A 0.179 kg	N/A 0.156 kg	N/A 0.285 kg	N/A 0.241 kg