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HMI Panels and PLC Modules: What They Do and How to Match a Replacement
When an HMI panel goes dark or a PLC module stops communicating, the machine it
Availability:
5 in stock
Single-row angular contact ball bearing, 55 x 120 x 29 mm, 25° contact angle, machined phenolic cage, light preload, universal face control, ABEC 1 accuracy.
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| MFR / Brand | RHP |
|---|---|
| MPN | 7311ETBSUL |
| Model | 7311 E TB SUL P0 / 3MM311 WI CR DUL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 55 mm |
| OD | 120 mm |
| Width | 29 mm |
| Material | Chrome steel |
|---|---|
| Series | 7300 (ISO dimension series 03) |
| Condition | New |
| Lubricant | Grease or oil |
| Base Number | 7311 |
| Industry Terms | Angular contact bearing, universally ground single, universal face control bearing, precision ball bearing, spindle bearing |
| Common Misspellings | RPH, R.H.P., 7311 ETB SUL, 7311-ETBSUL, 7311ETBSULPO |
| Bore Shaft Size | 55 mm |
| Mpn Variants | 7311ETBSUL, 7311ETBSULP0, 7311-E-TB-SUL-P0, 7311 E TB SUL P0, B7311X3TAULEP1, B-7311-X3-TAUL-EP1, 3MM311WICRDUL |
| Rolling Elements | Chrome steel balls |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Part Number | 7311ETBSUL |
| Cross Reference 1 | SKF 7311 ACDGA |
|---|
RHP 7311ETBSUL single-row angular contact ball bearing, ISO dimension series 03. Bore: 55 mm. Outside Diameter: 120 mm. Overall Width: 29 mm. Contact Angle: 25°. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open. Rolling Elements: chrome steel balls. Cage Material: machined laminated phenolic. Precision Class: ABEC 1 / P0. Unit Quantity: 1 Pc.
7311 — ISO dimension series 03, bore code 11, 55 mm bore. E — Contact Angle: 25°, the legacy RHP form of the current A5 code. T — Cage Material: machined laminated phenolic. SU — universal face control: the two ring faces are ground to a fixed offset at manufacture. L — Preload: light. P0 — Precision Class: ABEC 1. The carton also carries the older B-series form B7311X3-TAUL-EP1, in which X3 is the same 25° contact angle, and the Fafnir cross 3MM311WICRDUL, whose 3MM prefix is again 25°.
A 25° contact angle sits between the speed-biased 15° and the thrust-biased 40° executions: it carries appreciably more axial load and gives more axial stiffness than a 15° bearing on the same envelope, at a lower speed ceiling. Universal face control lets any two of these bearings clamp up to the intended preload back-to-back, face-to-face or in tandem with no ground spacer. Light preload is the lowest-friction and lowest-heat of the four RHP preload grades. Maximum recommended operating temperature is 120 °C, set by the laminated phenolic cage. Lubricant: grease or oil. Internal Clearance: N/A — the bearing is preload-set rather than clearance-set.
Unit Quantity: 1 Pc. One universally faced single bearing. A single bearing carries thrust in one direction; a back-to-back or face-to-face pair carries it in both, and a tandem pair shares a one-way thrust load between the two bearings.
Chamfer r: 2 mm minimum. Chamfer r1: 1 mm minimum. Shaft abutment diameter da: 65 mm minimum. Housing abutment diameter Da: 110 mm maximum. Shaft and housing fillet radius ra: 2 mm maximum.
SKF 7311 ACDGA matches this bearing: 55 x 120 x 29 mm, 25°, universally matchable, light preload. Same size with a different contact angle: 7311C at 15°, 7311A at 30° and 7311B at 40°.
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