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RHP 7211ETSUMP4 super-precision angular contact bearing, 55 x 100 x 21 mm, 25 degree contact angle, phenolic cage, medium preload, universal faces.
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| MFR / Brand | RHP |
|---|---|
| MPN | 7211ETSUMP4 |
| Model | 7211-E-T-SUM-P4 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 55 mm |
| OD | 100 mm |
| Width | 21 mm |
| Base Number | 7211 |
|---|---|
| Industry Terms | Super precision spindle bearing; machine tool spindle bearing; ABEC 7 angular contact bearing |
| Bore Shaft Size | 55 mm |
| Mpn Variants | 7211ETSUMP4; 7211E; 7211-E-T-SUM-P4; 7211 E T SUM P4; B7211X3TADUMEP7; 7211ETDUMP4 |
| Precision Class | ABEC 7 / P4 |
| Additional Attributes | Permissible axial load 32.5 kN; effective load centre 28.6 mm; medium preload force 1,206 N (pair); axial rigidity 256 N/um (pair); axial clearance -26 um (pair) |
| Cage Type | Machined, outer-ring guided |
| Dynamic Load Rating | 63,500 N |
| Static Load Rating | 38,000 N |
| Series | 7200 |
| Rolling Elements | Balls |
| Item Weight | 0.596 kg (1.31 lb) |
| Cage Material | Machined laminated phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Limiting Speed | 13,000 rpm grease; 19,400 rpm oil |
| Lubricant | Grease or oil |
| Harmonization Code | 8482.10 |
| Contact Angle | 25° |
| Preload | Medium |
| Part Number | 7211ETSUMP4 |
| Material | Chrome bearing steel |
| Common Misspellings | RPH 7211ETSUMP4; RHP 7211 ETSUMP4; RHP 7211ETSUM P4; RHP7211ETSUMP4 |
| Application Types | Machine tool spindles; high-speed precision spindle supports; grinding spindles |
| Cross Reference 1 | NSK 7211A5TRSUMP4 |
|---|---|
| Cross Reference 2 | SKF 7211 ACD/P4DGB |
| Cross Reference 3 | FAG B7211-E-T-P4S-UM |
| Cross Reference 4 | Fafnir 3MM211WI-CR-SUM |
RHP 7211ETSUMP4 is a single super-precision angular contact ball bearing, 72 dimension series, 55 mm bore x 100 mm outside diameter x 21 mm width, 25° contact angle, universally ground faces and medium preload. Unit Quantity: 1 Pc.
7211 — 72 dimension series, 55 mm bore.
E — 25° contact angle.
T — machined laminated phenolic cage, outer-ring guided.
SU — single bearing with universally ground faces; two or more pieces of the same designation assemble back-to-back, face-to-face or in tandem.
M — medium preload.
P4 — RHP EP7, equal to ISO tolerance class 4 and ABEC 7.
B7211X3TADUMEP7 — RHP B-series designation.
Bore Diameter: 55 mm. Outside Diameter: 100 mm. Overall Width: 21 mm. Contact Angle: 25°. Precision Class: ABEC 7 / P4. Preload: Medium. Cage Material: Machined laminated phenolic. Cage Type: Machined, outer-ring guided. Dynamic Load Rating: 63,500 N. Static Load Rating: 38,000 N. Permissible Axial Load: 32,500 N. Limiting Speed: 13,000 rpm grease; 19,400 rpm oil or oil-air. Closure Type: Open. Number Of Rows: 1. Bore Type: Straight. Rolling Elements: Balls. Series: 7200. Item Weight: 0.596 kg (1.31 lb).
Effective Load Centre: 28.6 mm. Chamfer Dimension: 1.5 mm minimum bore side, 1 mm minimum outer side. Axial rigidity at medium preload in a back-to-back or face-to-face pair: 256 N/µm. Measured axial clearance at medium preload in a pair: -26 µm.
Same-specification equivalents: NSK 7211A5TRSUMP4, SKF 7211 ACD/P4DGB, FAG B7211-E-T-P4S-UM, Fafnir 3MM211WI-CR-SUM. RHP B-series designation: B7211X3TADUMEP7. A 7211C execution shares the 55 x 100 x 21 mm envelope at a 15° contact angle and is a related size.
55 mm bore, 100 mm outside diameter and 21 mm width.
25° contact angle with medium preload.
Dynamic load rating 63,500 N and static load rating 38,000 N. Limiting speed 13,000 rpm grease and 19,400 rpm oil or oil-air.
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