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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Availability:
1 in stock
Super precision angular contact ball bearings, 75 x 130 x 25 mm, 15 degree contact angle, extra light preload, open, phenolic cage, P4 class. Pair.
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$373.25
1 in stock
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| MFR / Brand | SKF |
|---|---|
| MPN | 7215 CD/P4DGA |
| Model | 7215 C P4 DGA / 2MM215WI CR DUL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 75 mm |
| OD | 130 mm |
| Width | 25 mm |
| Material | Bearing Steel |
|---|---|
| Series | 72 |
| Lubricant | Oil/Grease |
| Preload | Extra light |
| Base Number | 7215 |
| Industry Terms | Spindle bearing; super precision bearing; machine tool bearing; precision angular contact; duplex pair; new old stock |
| Common Misspellings | 7215CD P4 DGA; 7215 CD/P4 DAG; SKF 7215CDP4 DGA |
| Overall Width | 25 mm |
| Bore Shaft Size | 75 mm |
| Mpn Variants | 7215CD/P4DGA; 7215 CD P4 DGA; 7215CDP4DGA; 7215-C-P4-DGA; 7215CP4DGA; 7215 C P4 DGA; 7215C |
| Manufacturer Status | New old stock |
| Closure Type | Open |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Part Number | 7215 CD/P4 DGA |
| Cross Reference 1 | Fafnir 2MM215WI-DUL – light preload |
|---|---|
| Cross Reference 2 | NSK 7215CTYNDULP4 – light preload |
| Cross Reference 3 | SKF 7215 ACD/P4A – 25 deg contact angle |
SKF 7215 CD/P4 DGA super-precision angular contact ball bearing. Series: 72, light section. Base number: 7215. Bore: 75 mm. Outside diameter: 130 mm. Width: 25 mm. Single row, straight bore, open on both faces. Searchable variants of the designation: 7215CD/P4DGA, 7215 CD P4 DGA, 7215CDP4DGA, 7215-C-P4-DGA, 7215CP4DGA, 7215C.
Contact Angle: 15°. Precision Class: P4, equivalent to ABEC 7. Preload: extra light. Cage: machined, fabric-reinforced phenolic, rated to 120 °C.
A 15° contact angle favours speed and radial rigidity over thrust capacity, which is why this execution is standard in machine tool spindles and precision grinders. Extra light preload holds running accuracy with low heat generation. Basic dynamic load rating: 74.1 kN. Basic static load rating: 64.0 kN. Limiting speed: 13000 rpm.
Two bearings. Unit Quantity: 2 Pcs. Universally matchable execution, ground to extra light preload. Internal Clearance: N/A — the bearings are preload-set, not clearance-set.
New old stock, open box. Item weight 2.55 lbs per bearing.
Mounting is by interference on the inner ring seat with the outer ring located axially in the housing. Oil or grease lubrication both suit the phenolic cage. Operating range: -30 °C to 120 °C.
Closest equivalents on the same 75 x 130 x 25 mm, 15° envelope are Fafnir 2MM215WI-DUL and NSK 7215CTYNDULP4, both ground to light preload, one grade above this extra light DGA preload. Related size: 7215 ACD/P4A carries a 25° contact angle and a different thrust capacity.
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