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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Super-precision angular contact ball bearing, 40 mm bore x 80 mm OD x 18 mm wide, 15 degree contact angle, ABEC 7, matched duplex pair at medium preload. 2 Pcs.
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$194.28
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| MFR / Brand | RHP |
|---|---|
| MPN | 7208CTDUMP4 |
| Model | 7208 C T DUM P4 / 2MM208WI CR DUM / 208HDM / |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 40 mm |
| OD | 80 mm |
| Width | 18 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Base Number | 7208 |
| Industry Terms | Super precision spindle bearing; matched duplex pair; ABEC 7 angular contact; machine tool spindle bearing |
| Common Misspellings | 7208CTDUM P4; 7208-CT-DUMP4; RHP 7208CTDUNP4; 7208 CTDUMP4 |
| Application Types | Machine tool spindles; grinding spindles; high-speed precision gearboxes; rotary tables |
| Bore Shaft Size | 40 mm (1.5748 in) |
| Mpn Variants | 7208CTDUMP4; 7208-C-T-DUM-P4; 7208 C T DUM P4; 7208CTDUM; 7208X2TADUMEP7 |
| Rolling Elements | Ball |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Part Number | 7208CTDUMP4 |
A super-precision angular contact ball bearing in the 7208 size, supplied as a factory-matched duplex pair. Bore 40 mm, outside diameter 80 mm, width 18 mm per bearing.
7208 — ISO angular contact series: 40 mm bore, 80 mm outside diameter, 18 mm width.
C — 15° contact angle in the RHP scheme. The B-series equivalent number carries the X2 suffix, which is the same 15° class.
T — phenolic laminated-fabric cage.
DUM — duplex universal pair, medium preload.
P4 — ABEC 7 precision class.
A 15° contact angle is the high-speed end of the angular contact range: it generates less centrifugal ball loading and less heat than a 25° or 40° bearing of the same envelope, and carries proportionally less thrust. Medium preload sits between light and heavy, trading a rise in friction and heat for greater axial stiffness and tighter running accuracy under load. The phenolic cage is light and self-lubricating, suited to high cage speeds, and sets a lower temperature ceiling than a machined bronze cage.
2 Pcs — one matched duplex pair. Universal grinding allows the pair to be assembled back-to-back, face-to-face or in tandem.
The preload is ground into the ring faces and is realised only when both inner rings and both outer rings are clamped solidly against their seats. Alignment marks on the outer ring faces set the intended arrangement.
The RHP B-series equivalent is 7208X2TADUMEP7. Same-envelope 7208 bearings at a 25° or 40° contact angle, or at light or heavy preload, are related sizes rather than interchanges.
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Rockwell’s own product page for the Kinetix 6000 is down
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
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