NSK22232ME4C3S11Spherical Roller Bearing – Straight Bore, 160 mm ID, 290 mm OD, 80 mm Width, Open, C3 Internal Clearance, Machined Brass Cage, 200 °C Stabilised.

Product Description

What this part is

NSK 22232ME4C3S11 double-row spherical roller bearing, 160 mm bore × 290 mm outside diameter × 80 mm width. Series: 222. Bore Type: straight. Internal Clearance: C3. Machined brass cage. Open, with a lubrication groove and feed holes in the outer ring.

Decoding the designation

Base Number: 22232. M: machined brass cage. E4: lubrication groove and oil holes in the outer ring, the NSK equivalent of a W33 outer ring. C3: internal clearance, greater than normal. S11: rings and rollers heat-stabilised for operation to 200°C. The number is also written 22232-M-E4/W33-C3-S11, 22232 M E4 C3 S11 and 22232 E MB C3 W33.

What these specs mean in practice

A double-row spherical roller bearing carries very high radial load, takes thrust in both directions, and accommodates shaft misalignment relative to the housing. Basic Dynamic Load Rating: 1,140 kN. Basic Static Load Rating: 1,320 kN. Limiting Speed: 1,200 rpm on grease, 1,500 rpm in an oil bath. Mass: 23.1 kg. A machined brass cage handles higher temperature and shock loading than a pressed steel cage. C3 clearance gives more room for thermal growth than a normal-clearance bearing, which suits a hot running seat.

Heat stabilisation

The S11 suffix raises the permissible operating temperature to 200°C by dimensionally stabilising the rings and rollers, so raceway geometry holds at temperatures where a standard bearing would grow. This is what makes the bearing suitable for kiln, fan, dryer and furnace-adjacent duty.

Bore form and mounting

The bore is straight and mounts directly on the shaft seat, with no adapter sleeve in the assembly. Maximum permissible misalignment: 0.5°. The outer-ring groove and holes align with a housing lubrication port for relubrication in service.

Interchange guidance

SKF 22232 CC/C3W33, FAG 22232-E1-M-C3, Timken 22232EMBW33C3 and NTN 22232EMD1C3 cover the same envelope, straight bore, clearance and lubrication feature. A 22232MKE4C3S11 has a 1:12 tapered bore for an adapter sleeve and is a related size.