Roll neck bearings for rolling mills are limited in size by the roll neck diameter and minimum roll diameter. Four-row tapered roller bearings are designed to have the
highest possible load rating within this limited space. This type of bearing has two double-cone assemblies, two cups, one double cup, and three spacers. The bearings have their internal clearance adjusted for each set, so it is necessary to assemble them correctly in accordance with their serial numbers and matching symbols.
Various part numbers in stock, welcome inquiry. Fast shipment within 2-3 working days.
Bearing Numbers
Abutment and Fillet Dimensions (mm)
Mass(kg)
Single
Matched
Da
Db
ra max .
rb(5) max .
BA220-1B
DB
DF
291
—
2
17.9
BT220-2A
DB
DF
291
—
2
17.8
BT220-2E
DF
—
296
2
1
18.2
BT220-51
DF
301
306
2
1
23.5
BA220-2
DF
311
—
2
—
29.9
BT220-3
—
316
2.5
1
30.3
BA225-1
324
—
2.5
37.4
BA230-1
DB
DF
301
2
19.5
BA230-2
—
—
316
2
1
22.7
BA230-2A
—
—
316
2
1
21.7
BA230-2B
DB
—
—
316
2
1
21.2
BT230-51
DB
—
—
325
2.5
1
27.1
BA240-1
DF
311
2
20.1
BT240-1
DB
DF
311
316
2
1
19.4
BT240-1E
DB
—
—
316
2
1
19.7
BT240-2
DB
—
—
325
2.5
1
22.7
7048BX
DB
DF
338
345
2.5
1
39.5
BT250-2
DB DB
—
—
323
0.6
2
19
BT250-51
—
—
335
2.5
1
26.8
BA260-1
DB DB
DF
350
355
2
1
31.5
BT260-51
DF
—
355
2
1
30.9
BT260-51aE
350
—
2
2
30.9
BT260-52
DB DB
DF
—
362
3
2
41.5
7052BX
DB
373
382
3
1.5
57.6
BT270-1
—
365
2
1
31.7
BT277-1
DB
—
—
402
3
1.5
63.1
BT280-51
DB DB
—
—
374
2
1
34.4
BT280-2
—
—
383
3
1.5
41.5
BT285-1
DB
—
—
362
2.5
2
28.5
BA290-2
DB DB DB
—
—
394
2.5
1
44.2
BT290-2
—
—
394
2.5
1
45.3
BT290-52
—
—
401
4
2
54
7960AX
DB DB
DF
397
404
2.5
1
48.6
7960BAX
DF
397
404
2.5
1
46.7
BA310-2
DB DB
—
—
412
3
1.5
52.5
BT310-51
—
—
412
3
1.5
52.2
BA320-1
DB DB
—
426
2.5
2.5
55.4
BT320-51
433
2.5
1
54.4
BT340-51
DB DB
—
—
461
3
1.5
71.6
BT340-1
—
—
519
4
2
161
BT360-3
DF
477
—
4
2
85
7976BX
DB DB DB
DF
491
500
3
1.5
81.1
BA380-1
—
—
519
4
2
115
BT380-1
—
—
519
4
2
116
7984BX
DB
DF
530
539
3
1.5
88.3
BA580-1
DB
—
—
754
4
2
217
WHCD Bearing Co.,Ltd is professional bearing supplier, engaged in bearing business with more than eighteen years, export to worldwide countries, as America, European, Middle-East, Southeast Asia …etc. with plenty long-term cooperation customers. WHCD Bearing companywill provide professional and prompt solution for customers.Original Quality and Warranted, and Bearing experts team support customer service. Various bearing types for customer choose:
