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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, 85 x 130 x 22 mm, 15 degree contact angle, extra light preload, open, phenolic cage, P4 class. Pair.
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$589.03
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| MFR / Brand | SKF |
|---|---|
| MPN | 7017 C/P4DGA |
| Model | 7017 C P4 DGA / 2MM9117WI CR DUL |
| Bearing Type | Angular Contact Ball Bearing |
| ID | 85 mm |
| OD | 130 mm |
| Width | 22 mm |
| Material | Bearing Steel |
|---|---|
| Series | 70 |
| Preload | Extra light |
| Base Number | 7017 |
| Industry Terms | Spindle bearing; super precision bearing; machine tool bearing; precision angular contact; duplex pair |
| Common Misspellings | 7017C P4 DGA; 7017 C/P4 DAG; SKF 7017CP4 DGA |
| Overall Width | 22 mm |
| Bore Shaft Size | 85 mm |
| Mpn Variants | 7017C/P4DGA; 7017 C P4 DGA; 7017CP4DGA; 7017-C-P4-DGA; 7017C |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Part Number | 7017 C/P4 DGA |
| Cross Reference 1 | Fafnir 2MM9117WI CR DUL – light vs extra light preload |
|---|---|
| Cross Reference 2 | FAG B7017-C-T-P4S-DUL – light vs extra light preload |
| Cross Reference 3 | SKF 7017 ACD/P4ADGA – 25° vs 15° |
SKF 7017 C/P4 DGA super-precision angular contact ball bearing. Series: 70, extra-light section. Base number: 7017. Bore: 85 mm. Outside diameter: 130 mm. Width: 22 mm. Single row, straight bore, open on both faces. Searchable variants of the designation: 7017C/P4DGA, 7017 C P4 DGA, 7017CP4DGA, 7017-C-P4-DGA, 7017C.
Contact Angle: 15°. Precision Class: P4, equivalent to ABEC 7. Preload: extra light. Cage: machined phenolic, outer-ring-land-riding.
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: 67.6 kN. Basic static load rating: 65.5 kN.
Two bearings. Unit Quantity: 2 Pcs. Universally matchable execution, ground to the extra light preload class. Internal Clearance: N/A — the bearings are preload-set, not clearance-set.
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.
FAG B7017-C-T-P4S-DUL and Fafnir 2MM9117WI CR DUL are 15° duplex pairs of this size at light rather than extra light preload. SKF 7017 ACD/P4A carries a 25° contact angle and a different thrust capacity.
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