ISO Rolamentos de rolos gravados

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The original metric part-numbering system for tapered roller bearings was based on the ISO 15 dimensional plan for radial bearings.

ISO introduced a new numbering system for tapered roller bearings in the ISO 355 plan. This numbering system uses three alphanumeric fields to define a dimension series. The bearing part number is defined by adding the inner ring bore diameter after the dimension series..

ABMA (inch) part numbers designed with metric envelope dimensions are identified with a J-prefix. Many of these part numbers have been assigned an ISO dimension series.The latest ISO 355 plan includes an expanded range of metric bearings originally designed by The Timken Company. These bearings are identified with a J-prefix.

ABMA standard 20 defines 5 classes: ABEC 1, ABEC 3, ABEC 5, ABEC 7, and ABEC 9. Instrument series ball bearings are defined in standards 12.1 and 12.2 and carry the suffix “P”. Extra thin and thin section ball bearings defined in standards 12.1 and 12.2 carry the suffix “T”. The higher the number of the classification, the tighter the tolerances become resulting in higher precision of the assembled bearing. When the classification system was first set up, machine tool technology was such that manufacturers mass produced only ABEC 1, and sometimes ABEC 3. Bearings for the higher classifications were selected from the production runs of the lower classification. Today, the technology has advanced to the point where manufacturers can produce ABEC 7 and ABEC 9 bearings routinely.

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Bearing Number	Bore Dia	Outer DIa	Width	Size
66,675 mm x 112,712 mm x 30,048 mm ISO 3994/3920 Rolamentos de rolos gravados	409.575 mm	434 mm	0.4	546.1 mm
50 mm x 110 mm x 27 mm ISO 31310 Rolamentos de rolos gravados	104 mm	200	344 mm	1320000 N
28,575 mm x 72,626 mm x 24,257 mm ISO 41125/41286 Rolamentos de rolos gravados	52	52 mm	25 mm	28,575 mm x 72,626 mm x 24,257 mm
41,275 mm x 95,25 mm x 28,3 mm ISO HM903244/10 Rolamentos de rolos gravados	4012802783100	16,7 mm	1 mm	52 mm
609,6 mm x 762 mm x 92,075 mm ISO L879947/10 Rolamentos de rolos gravados	42 mm	Fersa	F16046	42
63,487 mm x 94,976 mm x 15,5 mm ISO L910349/10 Rolamentos de rolos gravados	AST	5.7502	0.095	0.0048
260 mm x 480 mm x 80 mm ISO 30252 Rolamentos de rolos gravados	20	NSK	NA499	0,017 Kg
174,625 mm x 288,925 mm x 63,5 mm ISO HM237542/10 Rolamentos de rolos gravados	NTN	540	7 Tolerance h14	2 410 kN
19,05 mm x 49,225 mm x 19,05 mm ISO 09067/09195 Rolamentos de rolos gravados	75 mm	21.2 kN	192 N	0.68 kN
45,987 mm x 74,976 mm x 18 mm ISO LM503349A/10 Rolamentos de rolos gravados	90 mm	90	100	ISO
70 mm x 130 mm x 42 mm ISO JF7049A/10 Rolamentos de rolos gravados	23,000 mm	23,000	40,000 mm	90,000 mm
269,875 mm x 381 mm x 74,612 mm ISO M252349/10 Rolamentos de rolos gravados	20,000	20,000 mm	14,000 mm	SNR