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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:
2 in stock
Super-precision spindle angular contact ball bearing, 85 x 130 x 22 mm, 15° contact angle, single universal, light preload, phenolic cage.
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$223.42
2 in stock
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| MFR / Brand | RHP |
|---|---|
| MPN | 7017CTSULP4 |
| Model | 7017C T SUL P4 / 2MM9117WI CR SUL / B7017X2TASUEP7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 85 mm |
| OD | 130 mm |
| Width | 22 mm |
| Material | High Carbon Chrome Steel |
|---|---|
| Series | 7000 |
| Lubricant | Oil |
| Base Number | 7017 |
| Industry Terms | Super precision spindle bearing; 15 degree angular contact; phenolic cage spindle bearing; ABEC 7 bearing; single universal bearing; machine tool spindle bearing |
| Common Misspellings | 7017 CTSULP4; 7017CTSUL P4; 7017CSULP4; RHP 7017 C T SUL P4; angular contct bearing |
| Bore Shaft Size | 85 mm (3.3465 in) |
| Mpn Variants | 7017CTSULP4; 7017-C-T-SUL-P4; 7017C T SUL P4; 7017CTSUL; 7017C; B7017X2TASUEP7 |
| Closure Type | Open |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Part Number | 7017CTSULP4 |
| Cross Reference 1 | Fafnir 2MM9117WICRSUL |
|---|---|
| Cross Reference 2 | FAG B7017-C-T-P4S-UL |
| Cross Reference 3 | SKF 7017 CDGA/P4A |
| Cross Reference 4 | NSK 7017CTRSULP4 |
| Cross Reference 7 | RHP 7017CTSUMP4 – medium preload, not light |
RHP 7017CTSULP4 super-precision spindle angular contact ball bearing. Bore 85 mm, outside diameter 130 mm, width 22 mm. Straight bore, open on both faces, single row of balls, machined phenolic cage piloted on the outer ring land.
70 is the ISO light angular contact dimension series and 17 is the bore code, giving an 85 mm bore. C denotes a 15° contact angle in the RHP scheme. T is a fabric-base laminate phenolic cage. SU marks a single universally ground bearing and L sets light preload. P4 is ISO Class 4, equivalent to ABEC 7. The carton also carries 2MM9117WICRSUL and B7017X2TASUEP7, whose 2MM and X2 codes confirm the 15° angle, whose CR code confirms the outer-land phenolic cage, and whose EP7 confirms the ABEC 7 class.
A 15° contact angle favours speed and radial stiffness over thrust capacity, which is the usual choice for a high-rpm grinding or milling spindle. The light 70 series keeps the section thin, so the bearing fits a slender housing and runs cool. Piloting the phenolic cage on the outer ring land holds it stable at speed. Light preload removes internal play while keeping torque and heat generation low.
One piece. Universal grinding means any two units of this designation stack directly as a back-to-back, face-to-face or tandem set, with the light preload built into the ground ring faces. A single-row angular contact bearing takes thrust in one direction, so a second bearing opposes it.
Ring faces are ground flat and square for direct abutment, so preload develops when the shaft nut and housing cap are drawn fully home. Oil lubrication suits this class at speed.
The Fafnir 2MM9117WICRSUL is the same bearing under the WI numbering scheme. FAG B7017-C-T-P4S-UL, SKF 7017 CDGA/P4A and NSK 7017CTRSULP4 are the 15°, single universal, light preload, P4 versions from those makers. RHP 7017CTSUMP4 is the medium-preload version of this bearing.
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