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Super-precision angular contact spindle bearing, 75x130x25 mm; 15° contact angle, universally ground with light preload, supplied as half of a duplex pair. Stacks DB, DF or tandem for machine-tool spindles, grinders and high-speed motion control.
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| MFR / Brand | RHP |
|---|---|
| MPN | 7215CTDUL |
| Model | 7215-C-T-DUL-P0 / 7215 C T UL / B-7215-X2-TA-UL-EP1 |
| Bearing Type | Angular Contact Ball Bearing |
| Width | 25 mm |
| Condition | New |
|---|---|
| Preload | Light (L) |
| Base Number | 7215 (ISO) |
| Common Misspellings | 7215CTDUL 1/2PR; 7215CTDUL-12PR; 7215-C-T-DUL-P0; 7215CTDULP4; RHP 7215 CTDUL; R.H.P. 7215CTDUL; 7215CTDUL half pair |
| Application Types | Machine-tool spindles; precision grinding spindles; high-speed motion control; rotary tables and indexers; instrument spindles |
| Bore Shaft Size | 75 mm (2.9528 in) |
| Mpn Variants | 7215CTDUL-1/2PR; 7215CTDUL1/2PR; 7215-C-T-DUL; 7215CTDUL; B-7215-X2-TA-UL-EP1; 7215C |
| Manufacturer Status | RHP acquired by NSK; RHP and NSK designations cross-reference directly. Made in England |
| Compatible With Replaces | RHP / NSK-RHP 7215CTDUL halves - pair only with another universally ground half of the same designation and preload class; shares the 75x130x25 mm 15° super-precision envelope with equivalent SKF, FAG and Timken spindle bearings, but arrangement (SU/DU) and preload class (L/M/H) must match before substituting |
| Arrangement Configuration | Universally ground, supplied as half of a duplex pair (1/2PR); two halves stack back-to-back (DB), face-to-face (DF) or tandem (DT) without shimming |
| Additional Attributes | ISO envelope: 7215 (75 x 130 x 25 mm); Suffix decode - C: 15 degree contact angle; T: machined cage; DUL: duplex universal, light preload; -1/2PR: half of a pair, i.e. ONE bearing; Ordering note: a complete DUL duplex set requires two halves; Preload positioning: light preload favours speed and low heat generation over maximum rigidity; Country of manufacture: England; PRECISION CLASS UNVERIFIED - the source title carried '-P0' (normal class), which contradicts a universally ground preload-matched product; the equivalent Central Surplus listing for RHP 7221TDULP4-1/2PR carries P4 with an EP7 cross-reference, so P4 / ABEC 7 is likely but is NOT stated here pending label verification; Not published for this reference: dynamic and static load ratings, limiting speed, weight |
| Number Of Rows | 1 (single bearing, half of a pair) |
| Contact Angle | 15° |
| Mounting Arrangement | Duplex universal light preload (DUL) when paired |
| Design Units | Metric |
| Bearing Class | Super precision |
| Part Number | 7215CTDUL-1/2PR |
| Cross Reference 1 | RHP 7215CTDUL-1/2PR |
|---|---|
| Cross Reference 2 | 7215-C-T-DUL (decoded designation) |
| Cross Reference 3 | B-7215-X2-TA-UL-EP1 (RHP alternate designation) |
| Cross Reference 4 | 7215C (ISO base designation, 15°) |
This is a super-precision angular contact ball bearing in the 75 mm bore x 130 mm outside diameter x 25 mm width envelope — the ISO 7215 size.
The suffixes carry the important information: C is a 15 degree contact angle, T denotes the machined cage, DUL is duplex universal with light preload, and the -1/2PR suffix means this is HALF OF A PAIR.
That last point matters before you order: DUL describes how two of these behave when mounted together, and 1/2PR means you are buying one of the two. A complete duplex light-preload set needs two.
Because the rings are universally ground, any two matched halves stack back-to-back (DB), face-to-face (DF) or in tandem (DT) and reach the specified preload with no shimming or custom grinding.
Light preload favours speed and low heat generation over maximum rigidity, which suits higher-speed spindles. A 15 degree contact angle likewise favours speed and radial capacity rather than pure thrust.
RHP bearings are made in England; RHP was acquired by NSK, so RHP and NSK designations cross-reference directly and this part also appears as B-7215-X2-TA-UL-EP1. Typical duty is machine-tool spindles, precision grinders, high-speed motion control and rotary tables.
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