SY55WF SKF 55mm Two Bolt Pillow Block Bearing Unit
Support a 55 mm shaft with the SKF SY 55 WF, a bearing unit that combines a cast iron pillow block housing with a YEL 211-2F insert ball bearing. Its two-bolt base fixes directly to a support surface, making it a practical choice for conveyors, fans, material handling equipment and general industrial machinery.
The bearing has an inner ring extended on both sides and uses an eccentric locking collar to secure it to the shaft. Intended for applications with a constant direction of rotation, the unit is supplied assembled, greased and ready to mount. Contact seals and flingers on both sides help protect the bearing from contamination and retain lubricant.
With a shaft centre height of 63.5 mm and an overall housing length of 219 mm, the SY 55 WF provides a compact support arrangement. Elongated mounting holes allow adjustment during installation, while a grease fitting enables relubrication during maintenance.
Dimensions and technical details
Manufacturer: SKF
Product designation: SY 55 WF
Unit type: Two bolt pillow block ball bearing unit
Shaft diameter, d: 55 mm
Housing material: Cast iron
Bearing material: Bearing steel
Shaft centre height, H: 63.5 mm
Overall housing height, H2: 126 mm
Overall housing length, L: 219 mm
Housing base width, A: 60 mm
Housing top width, A1: 40 mm
Foot height, H1: 24 mm
Bearing inner ring width, B: 55.6 mm
Overall bearing width including locking collar, B1: 71.4 mm
Nominal mounting bolt centres, J: 171.5 mm
Minimum mounting bolt centres: 162 mm
Maximum mounting bolt centres: 181 mm
Mounting slot width, N: 18 mm
Mounting slot length, N1: 27.5 mm
Recommended mounting bolt diameter: 16 mm
Basic dynamic load rating, C: 43,600 N
Basic static load rating, C0: 29,000 N
Fatigue load limit, Pu: 1,250 N
Limiting speed with h6 shaft tolerance: 3,600 r/min
Approximate unit weight: 3.77 kg
Housing designation: SY 511 M
Bearing designation: YEL 211-2F
Shaft locking method: Eccentric locking collar
Sealing arrangement: Standard contact seals with flingers on both sides
Locking collar set screw tightening torque: 16.5 Nm
Available from Bearing King Ltd for machinery assembly, planned maintenance and bearing replacement.
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We offer a range of shipping options to suit you.
Royal Mail Standard Shipping
£2.00 - Our cheapest shipping method for parcels up to 500g. Parcels are sent using the Royal Mail standard shipping service and usually take 2-5 working days to arrive. This service isn’t tracked at any stage until point of delivery.
Royal Mail Tracked 48
£4.00 - For parcels weighing up to 2kg. Royal Mail aims to deliver within 2–3 working days from the date your order is dispatched, not from the date you place your order. Once dispatched, you’ll receive an email from Royal Mail containing full tracking details.
Next Working Day – UK Mainland Only
£8.50 – Orders placed before 3.30pm will be received the next working day, Monday to Friday. You will receive an email from the courier with full tracking details. We tend to use UPS, DPD or Royal Mail Next Day.
Northern Ireland 2 Day Service
£15.00 – This is a two day service to Northern Ireland. You will receive an email from the courier with full tracking details. We tend to use UPS, DPD or Royal Mail.
Northern Ireland Next Day Service
£35.00 - This is a next day service to Northern Ireland. You will receive an email with full tracking details. We tend to use UPS, DPD or Royal Mail Next Day.
Next Working Day AM – Pre 12 UK Mainland Only
£20.00 - Orders placed before 4pm will be received the next working day before Midday. You will receive an email from the courier with full tracking details. We tend to use UPS, DPD or Royal Mail.
Next Working Day AM – Pre 10.30 UK Mainland Only
£25.00 - Orders placed before 4pm will be received the next working day before 10.30am. You will receive an email from the courier with full tracking details.
Scottish Islands 2-3 Day Service
£25.00 - This is a two to three day service. You will receive an email from the courier with full tracking details.
Scottish Highlands 2-3 Day service
£35.00 - This is a two to three day service. You will receive an email from the courier with full tracking details.
SAME DAY TAXI – Please call 01709 527269 for a quote and we will try to accommodate where possible.
Click and Collect
FREE - We offer a Click & Collect service for customers that are able to collect from our premises at Bearing King. Unit 5, Northfield Business Park, Parkgate, Rotherham S60 1SD United Kingdom.
Please note, you will be notified by email when your order is available for collection. Do not set off to collect your order until you have received the email notification that the order is ready for collection.
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Returns Policy
1. You may return an unused item in new condition unless faulty within 30 days of receipt. Damaged or used goods cannot be refunded.
2. A copy of our returns form must be included with the returned goods.
3. Customers will be responsible for the original and return shipping charges unless our customer service department determines that we are at fault for an order error or product defect. Bearing King will not be responsible for any return item lost in transit.
4. Once we receive the package and the goods are checked, we will refund you by the payment method used when the order was placed.
5. Please allow 3-5 days for your return to be processed or exchange to be sent.
