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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
1 in stock
Angular contact ball bearing set, 40 x 68 x 15 mm section, 15° contact angle, counterbored outer ring, open, ABEC 7 precision, back-to-back mounting.
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$335.03
1 in stock
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| MFR / Brand | MRC |
|---|---|
| Model | 7108 KRDT DB BKE#7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 40 mm |
| OD | 68 mm (2.6772 in) |
| Width | 30 mm |
| Material | Chrome steel |
|---|---|
| Series | 7100K |
| Lubricant | Oil/Grease |
| Base Number | 7108 |
| Industry Terms | Precision spindle bearing; duplex angular contact set; machine tool bearing; ABEC 7 bearing |
| Common Misspellings | 7108KRDTB; 7108 KDRTDB; 7108KRDTDP; MRC 7108 KRDT |
| Overall Width | 15 mm (0.5906 in) |
| Bore Shaft Size | 40 mm (1.5748 in) |
| Mpn Variants | 7108KRDTDB; 7108 KR DT DB; 7108KR-DTDB; 7108KRDT; 7108 KRDT DB; 7108KRDTDB-BKE7 |
| Closure Type | Open |
| Rolling Elements | Ball |
| Number Of Rows | 2 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Part Number | 7108KRDTDB |
| Cross Reference 1 | FAG B7008-C-T-P4S-DB – 15°, back-to-back pair |
|---|---|
| Cross Reference 2 | SKF 7008 CD/P4A – 15°, single; order as DB set |
MRC 7108KRDTDB precision angular contact ball bearing set. Bore: 40 mm. Outside diameter: 68 mm. Section width: 15 mm per bearing. Series: 7100K, MRC’s extra-light angular contact section. Contact Angle: 15°. Precision Class: ABEC 7. Chrome steel balls run on a phenolic cage, rings open on both faces.
Series: 7100K, angular contact, extra light. Bore code 08: 40 mm. Type R: 15° contact angle with a counterbored outer ring. DT: matched tandem execution. DB: back-to-back mounting. Searchable forms of the number include 7108KRDTDB, 7108 KR DT DB, 7108KR-DTDB and 7108KRDT.
A 15° contact angle favours speed and radial rigidity, which is what carries this section to a 19,000 rpm limiting speed. The counterbored outer ring gives each bearing one high shoulder, so each piece carries thrust in a single direction and the pair covers both. ABEC 7 tolerances hold running accuracy tight and keep vibration low at speed, the reason this class is specified for machine tool and instrument spindles.
Unit Quantity: 2 Pcs. Total set width: 30 mm. Mounting Arrangement: back-to-back. Faces are flush ground so the pair seats on a common shoulder and takes up its preload on clamp-up. Preload comes from the matched grinding rather than from an internal clearance class.
Bore Type: straight, 40 mm. Housing bore: 68 mm. Back-to-back mounting places the load lines divergent, which gives the stiffer moment reaction of the two duplex arrangements and tolerates shaft deflection better than face-to-face. Both rings clamp axially against square, ground abutments.
ISO base number: 7008. Matching 15° super-precision numbers in 40 x 68 x 15 mm: FAG B7008-C-T-P4S-DB (back-to-back pair) and SKF 7008 CD/P4A (single bearing; order as a back-to-back set). A 25° or 40° bearing in the same size is a related part, carrying a different thrust-to-speed balance.
Country of origin: United States.
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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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