Timken offers the most extensive line of tapered roller bearings in the world. Tapered roller bearings consist of four interdependent components: the cone (inner ring), the cup (outer ring), the tapered rollers (rolling elements) and the cage (roller retainer). Tapered roller bearings are uniquely designed to manage both thrust and radial loads between a rotating and non-rotating member. The steeper the cup angle, the greater the ability of the bearing to handle thrust loads.
Industries:
Aerospace, agriculture, automotive, heavy truck, cement, aggregate, coal, oil and gas, construction, gear drives, machine tools, mining, paper, metals, rail and wind.
Benefits:
Enhanced performance in demanding applications.
Series
385
Cone Part Number
387
Cup Part Number
382
Design Unit
Inch
Cage Material
Stamped Steel
Related Assembly Number(s)
387-90043 KB11786Y-900SA
Dimensions
d - Bore
2 1/4 in 57.150 mm
D - Cup Outer Diameter
3.8750 in 98.425 mm
B - Cone Width
0.8640 in 21.946 mm
C - Cup Width
0.7018 in 17.826 mm
T - Bearing Width
0.8268 in 21.001 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
0.09 in 2.300 mm
r - Cup Backface "To Clear" Radius2
0.030 in 0.76 mm
da - Cone Frontface Backing Diameter
2.48 in 63 mm
db - Cone Backface Backing Diameter
2.64 in 67 mm
Da - Cup Frontface Backing Diameter
3.66 in 92.96 mm
Db - Cup Backface Backing Diameter
3.54 in 89.92 mm
Ab - Cage-Cone Frontface Clearance
0.11 in 2.8 mm
Aa - Cage-Cone Backface Clearance
0.03 in 0.8 mm
a - Effective Center Location3
-0.12 in -3 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)4
6280 lbf 28000 N
C1 - Dynamic Radial Rating (1 million revolutions)5
24200 lbf 108000 N
C0 - Static Radial Rating
24100 lbf 107000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6
3810 lbf 16900 N
Factors
K - Factor7
1.65
e - ISO Factor8
0.35
Y - ISO Factor9
1.69
G1 - Heat Generation Factor (Roller-Raceway)
42
G2 - Heat Generation Factor (Rib-Roller End)
15.7
Cg - Geometry Factor10
0.0859
Spend over £50 (excl VAT) and your Shipping is FREE. UK Mainland Only.
We offer a range of shipping options to suit you.
Royal Mail Standard Shipping
£1.50 - 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
£3.00 - Parcels up to 2kg. Their aim is to deliver in 2-3 working days. You will receive an email from Royal Mail with full tracking details.
UPS Next Working Day – UK Mainland Only
£7.50 – Orders placed before 4pm will be received the next working day, Monday to Friday. You will receive an email from UPS with full tracking details.
UPS Northern Ireland 2 Day Service
£15.00 – This is a two day service from UPS to Northern Ireland. You will receive an email from UPS with full tracking details.
UPS Northern Ireland Next Day Service
£35.00 - This is a next day service from UPS to Northern Ireland. You will receive an email from UPS with full tracking details.
UPS 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 UPS with full tracking details.
UPS 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 UPS with full tracking details.
Scottish Islands 2-3 Day Service
£25.00 - This is a two to three day service from UPS. You will receive an email from UPS with full tracking details.
Scottish Highlands 2-3 Day service
£35.00 - This is a two to three day service from UPS. You will receive an email from UPS 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.
Shipping Internationally – Europe and Rest of the World
We offer a range of options for shipping around the world. These choices will be displayed dependent on your shipping location once the item is in your basket and you are ready to Checkout.
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.
