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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
Single-row super precision angular contact ball bearing, 55 x 100 x 21 mm, 15 degree contact angle, ABEC 5, phenolic cage, light preload. One bearing.
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$117.03
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| MFR / Brand | RHP |
|---|---|
| MPN | 7211CTDULP5-1/2PR |
| Model | 7211 C T DUL P5 / 2MM211WI CR DUL / 211HDL / 7211CDDGA |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 55 mm |
| OD | 100 mm |
| Width | 21 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Base Number | 7211 |
| Common Misspellings | RPH, R.H.P., RHP Bearings England, 7211CTDULP5, 7211CTDUL P5, 7211 CTDULP5, 7211CDULP5, 7211CTDULPS, 7211X2TADULP5, 7211X2TADULEPS, 1/2 PR, 1-2PR, half pair |
| Application Types | Machine tool spindles, grinding spindles, milling and boring spindles, precision rotary tables, high speed gearboxes, indexing heads, metrology and test equipment |
| Bore Shaft Size | 55 mm |
| Mpn Variants | 7211CTDULP5-1/2PR, 7211CTDULP5, 7211CTDULP5 1/2PR, 7211-C-T-DUL-P5, 7211 C T DUL P5, 7211CTDUL P5, 7211X2TADULEP5, 7211X2TADULEP5-1/2PR, 7211-X2-TA-DUL-EP5, 7211 X2 TA DUL EP5, 7211X2TADUL EP5, 7211X2TADUL, B7211CTDULP5, 7211CTDUL |
| Manufacturer Status | RHP brand absorbed into NSK; RHP to NSK is the obsolescence trail for current replacements |
| Compatible With Replaces | Replaces RHP 7211 X2 TA DUL EP5 and NSK 7211CTR DUL P5 in machine tool spindle positions calling for 15 degree contact angle, ABEC 5 precision, phenolic machined cage and light preload at the 55x100x21 mm envelope |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.68 |
| Contact Angle | 15° |
| Part Number | 7211CTDULP5-1/2PR |
| Cross Reference 6 | FAG B7211-C-T-P4S / B7211CTP4S / B7211-C-T-P5 |
|---|---|
| Cross Reference 7 | NTN 7211C / 7211CDB / 7211CG |
| Cross Reference 9 | 7211CTDUMP5 / 7211CTDUHP5 (medium, heavy preload) |
One RHP (now NSK) 7211CTDULP5 super-precision angular contact ball bearing, 55 mm bore x 100 mm outside diameter x 21 mm width. Single row, 15° contact angle, machined phenolic cage, open, ABEC 5 precision, universally ground for light-preload duplex pairing. Also marked on the carton as 7211X2TADULEP5. The -1/2PR suffix means one half of a pair: one bearing.
7211 — ISO base number, 55 x 100 x 21 mm boundary dimensions.
C — 15° nominal contact angle.
T / TA — machined phenolic (textile-laminate) cage.
X2 — RHP design variant coding, seen in the alternate 7211X2TADULEP5 marking.
DUL — duplex, universally ground, light preload.
P5 / EP5 — ABEC 5 precision class (RHP wrote its precision classes with an E prefix).
-1/2PR — one half of a pair. One bearing.
Bearing Type: Angular Contact Ball Bearing, super precision. Bore Diameter: 55 mm, straight. Outside Diameter: 100 mm. Overall Width: 21 mm. Contact Angle: 15°. Precision Class: ABEC 5 / ISO P5 (RHP EP5). Cage Material: Machined one-piece phenolic textile laminate. Closure Type: Open. Preload: Light. Number Of Rows: 1. Mounting Arrangement: Universal. Rolling Elements: Ball. Material: Bearing Steel. Series: 7200. Base Number: 7211. Harmonization Code: 8482.10.50.68. Unit Quantity: 1 Pc.
Bore Type: Straight. Universal grind: the ring faces are relieved to a controlled, symmetrical amount, so any two bearings of this designation can be arranged back-to-back, face-to-face or in tandem and develop the specified light preload when clamped.
RHP was absorbed into NSK, so RHP to NSK is the obsolescence trail. The corresponding NSK designation family is 7211CTR / 7211CTYN with DUL preload and P5 precision. Other 55 x 100 x 21 mm designations: SKF 7211 CD/P5 (15°), FAG B7211-C-T-P4S / B7211-C-T-P5 and NTN 7211C. Siblings 7211CTDUMP5 and 7211CTDUHP5 carry medium and heavy preload. Interchange is governed by contact angle, precision class, cage material, preload class and universal-grind status as well as by the envelope dimensions.
Bore Diameter: 55 mm. Outside Diameter: 100 mm. Overall Width: 21 mm.
Unit Quantity: 1 Pc. The -1/2PR suffix marks one half of a pair.
DUL is duplex, universally ground, light preload: a grind specification that lets two bearings be paired in any orientation.
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