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5 in stock
Matched back-to-back pair of 15° angular contact ball bearings, 25 mm bore x 47 mm OD x 12 mm wide per bearing, ABEC 5 with medium preload for high-speed spindles. Sold as 2 Pcs.
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Original price was: $130.03.$97.52Current price is: $97.52.
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| MFR / Brand | NACHI |
|---|---|
| Model | 7005-C DB GM P5 2MM9105 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 25 mm |
| OD | 47 mm |
| Width | 12 mm |
| Material | Chrome Steel |
|---|---|
| Series | 7000 |
| Condition | New |
| Lubricant | Oil |
| Preload | Medium Preload |
| Total Width | 24 mm as a back-to-back pair |
| Base Number | 7005C |
| Industry Terms | angular contact matched pair, spindle bearing set, DB duplex bearing, 15 degree angular contact, ABEC 5 bearing |
| Common Misspellings | Nachi 7005CDBGMP5, Natchi 7005, Nachi 7OO5CDB, 7005CDB GM PS, Nachii 7005CDB |
| Application Types | High-speed grinding spindles, light milling spindles, precision index heads, pump and compressor shafts |
| Bore Shaft Size | 25 mm (0.9843 in) |
| Mpn Variants | 7005CDB/GMP5, 7005C-DB-GM-P5, 7005 C DB GM P5, 7005CDBGMP5, 7005CDB |
| Manufacturer Status | Nachi-Fujikoshi active production |
| 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 | 7005CDB/GMP5 |
A Nachi 7005CDB/GMP5 matched pair of angular contact ball bearings arranged back-to-back. Each bearing has a 25 mm bore, a 47 mm outside diameter and a 12 mm width, giving a 24 mm stack height for the pair.
7005: 70 angular contact series, 25 mm bore, 47 mm OD, 12 mm width. C: 15° contact angle in the Nachi scheme. DB: back-to-back duplex arrangement, supplied as a matched set. GM: medium preload in the Nachi G preload series. P5: precision class 5, equivalent to ABEC 5.
A 15° contact angle favours speed and radial stiffness over axial capacity, which suits high-speed grinding and light milling spindles. Back-to-back mounting spreads the load lines outward, so the pair takes thrust in both directions and resists tilting moments – the standard arrangement where a shaft overhangs. Medium preload sets a working compromise: enough stiffness to hold position under cut, low enough heat generation to run continuously.
Bore: 25 mm (0.9843 in). Outside diameter: 47 mm (1.8504 in). Width per bearing: 12 mm (0.4724 in). Contact angle: 15°. Preload: medium (GM). Precision class: P5, ABEC 5. Number of rows: 1 per bearing. Rolling elements: steel balls. Closure: open. Arrangement: back-to-back matched pair (DB).
Supplied as 2 Pcs, a factory-matched back-to-back pair.
Genuine equivalents are 15° P5 back-to-back matched pairs in the same 25x47x12 mm envelope with medium preload: NSK 7005CTRDUMP5, NTN 7005CDB/GMP5, FAG 7005-B-TVP-UO in P5 medium and RHP 7005CTDUMP5. The 25° and 30° builds of the same size, and light or heavy preload versions, are related sizes rather than interchanges: they change axial rigidity, running temperature and speed limit.
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