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Super precision angular contact ball bearing, 130 x 180 x 24 mm, 15° contact angle, phenolic cage, ABEC 7, universally ground light preload.
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| MFR / Brand | RHP |
|---|---|
| MPN | 7926CTSULP4 |
| Model | 7926 C T SUL P4 / 71926 / 7926CTRDULP4 / 2MM9326WI CR SUL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 130 mm |
| OD | 180 mm |
| Width | 24 mm |
| Material | Steel |
|---|---|
| Series | 7900 |
| Condition | New |
| Preload | Light |
| Base Number | 71926 |
| Industry Terms | Super precision spindle bearing, machine tool spindle bearing, universally ground angular contact bearing, phenolic cage angular contact, extra light section spindle bearing |
| Common Misspellings | 7926CTSUL P4, 7926 CTSULP4, RHP 7926C TSUL P4, 71926CTSULP-4 |
| Application Types | Machine tool spindles, grinding spindles, high speed rotary tables, precision indexing heads |
| Overall Width | 24 mm |
| Bore Shaft Size | 130 mm |
| Mpn Variants | 7926CTSULP4, 7926-C-T-SUL-P4, 7926 C T SUL P4, 71926CTSULP4, 71926, 7926CTRDULP4, 2MM9326WICRSUL, 2MM9326WI-CR-SUL, 2MM9326WI |
| Arrangement Configuration | Single bearing, universally ground (SUL) |
| Precision Class | P4 / EP7 / ABEC 7 |
| Additional Attributes | Effective load center a: 32.8 mm. Permissible axial load Pa: 55.0 kN. Axial rigidity at light preload: 148 N/micron. Measured axial clearance at light preload: -20 micron. Shaft abutment da min 139 mm; housing abutment Da max 171 mm, Db max 174 mm. Fillet radii ra max 1.5 mm, rb max 0.8 mm. Bearing chamfer r min 1.5 mm, r1 min 1 mm. Calculation factor f0: 16.5. |
| Min Temp | -30 °C |
| Cage Type | Machined, outer ring land riding |
| Dynamic Load Rating | 99.0 kN |
| Static Load Rating | 91.0 kN |
| Precision Rating | ABEC 7 / P4 / EP7 |
| Rolling Elements | Balls |
| Max Temp | 120 °C |
| Item Weight | 3.31 lb (1.50 kg) |
| Cage Material | Phenolic laminate |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Internal Clearance | N/A - universally ground for preloaded matching |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universally matchable - DB, DF or DT |
| Design Units | Metric |
| Bearing Material | Chrome bearing steel |
| Running Accuracy | P4 / ABEC 7 / ISO Class 4 |
| Part Number | 7926CTSULP4 |
| Running Accuracy Radial And Axial Runout | P4 / ABEC 7 / ISO Class 4 |
| Cross Reference 1 | SKF 71926 CD/P4ADGA |
|---|---|
| Cross Reference 2 | Fafnir 2MM9326WICRSUL |
| Cross Reference 3 | NSK 7926CTRSULP4 |
| Cross Reference 4 | FAG B71926-C-T-P4S-UL |
RHP 7926CTSULP4 super precision angular contact ball bearing. Series: 7900, extra light section. ISO designation 71926. Bore: 130 mm. Outside Diameter: 180 mm. Width: 24 mm. Contact Angle: 15°. Single row, open, universally ground. Also written 7926-C-T-SUL-P4, 7926 C T SUL P4 and 71926CTSULP4.
C: 15° contact angle. T: machined laminated phenolic cage, outer ring land riding, rated to 120 °C. SUL: single bearing, universally ground, light preload when matched. P4: EP7, equivalent to ABEC 7. Fafnir cross designation 2MM9326WICRSUL carries the same 15° angle and phenolic outer land riding cage.
Basic Dynamic Load Rating: 99.0 kN. Basic Static Load Rating: 91.0 kN. Permissible Axial Load: 55.0 kN. The 7900 extra light section carries a 130 mm bore in a 180 mm outside diameter and only 24 mm of width, which keeps a large spindle journal inside a compact housing. A 15° contact angle favours speed and radial stiffness. Limiting speed runs to 7,500 rpm on grease and 11,300 rpm on oil or oil-air lubrication. The phenolic cage is light and self lubricating and holds ball guidance steady to 120 °C.
One bearing, universally ground. Universally ground rings let this piece be paired with any other universally ground bearing of the same designation, back-to-back, face-to-face or in tandem, and the light preload is achieved by the ground ring faces. Light preload across a matched pair is 652 N, giving 148 N/µm axial rigidity.
Diameter of Shaft Abutment, da min: 139 mm. Diameter of Housing Abutment, Da max: 171 mm and Db max: 174 mm. Radius of Shaft or Housing Fillet, ra max: 1.5 mm, rb max: 0.8 mm. Bearing chamfer r min: 1.5 mm, r1 min: 1 mm. Effective Load Center a: 32.8 mm. Recommended grease quantity: 8.4 g.
ISO base number 71926. Direct equivalents at the same 15° angle and P4 class: NSK 7926CTRSULP4, SKF 71926 CD/P4ADGA, FAG B71926-C-T-P4S-UL, Fafnir 2MM9326WICRSUL.
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