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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
3 in stock
Super-precision angular contact ball bearing, 120 x 215 x 40 mm, 15° contact angle, phenolic cage, P4 precision. Matched duplex pair, light preload.
List Price
$2,009.25
3 in stock
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| MFR / Brand | NSK |
|---|---|
| MPN | 7224CTDULP4 |
| Model | 7224 C T DUL P4 / 2MM224WI DUL / 7224CDP4ADGA |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 120 mm |
| OD | 215 mm |
| Width | 40 mm |
| Series | 7200 |
|---|---|
| Base Number | 7224 |
| Industry Terms | Super precision spindle bearing, ABEC 7 angular contact, phenolic cage spindle bearing, duplex pair, matched bearing set |
| Common Misspellings | 7224CTDULP-4, 7224 CT DUL P4, 7224CTDULPA, NSK 7224CTDULP4A |
| Bore Shaft Size | 120 mm |
| Mpn Variants | 7224CTDULP4, 7224-C-T-DUL-P4, 7224 C T DUL P4, 7224C, 7224CTRDULP4, 2MM224WI DUL, 7224CDP4ADGA |
| Compatible With Replaces | Machine tool spindles, boring mills, grinding heads and precision rotary tables using a 7224-size 15° angular contact pair |
| Rolling Elements | Balls |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.28 |
| Part Number | 7224CTDULP4 |
| Cross Reference 6 | 7224A5 (related size, 25° contact angle) |
|---|
NSK 7224CTDULP4 super-precision angular contact ball bearing. Bore: 120 mm. Outside diameter: 215 mm. Width: 40 mm per bearing. Series: 7200. Contact angle: 15°. Precision Class: P4 (ABEC 7). Single row per bearing, open on both faces, machined phenolic cage. Country of origin as recorded on this listing: Japan.
7224 = 72 series, 120 mm bore. C = 15° contact angle. T = machined phenolic cage rated to 120 °C. DUL = universally matchable duplex pair, light preload. P4 = ABEC 7 precision. Searchable forms: 7224CTDULP4, 7224-C-T-DUL-P4, 7224 C T DUL P4, 7224C, 7224CTRDULP4.
A 15° contact angle gives high speed capability and high radial stiffness, which is why it is the standard machine-tool spindle angle. The phenolic cage is light, quiet and oil-friendly at speed. P4 precision holds bore, outer ring and face runout tight, producing lower spindle vibration and closer tool location than a standard-class bearing.
Basic dynamic load rating Cr: 250 kN (56,200 lbf) per bearing. Basic static load rating C0r: 192 kN (43,150 lbf) per bearing. Permissible axial load Pa: 132 kN. Limiting speed: 6,900 rpm on grease and 10,500 rpm on oil or oil-air. Effective load centre a: 42.4 mm. Mass: 5.42 kg (11.95 lb) per bearing.
Two pieces ship, matching the DUL duplex designation. Rings are universally ground, so the pair mounts back-to-back, face-to-face or in tandem. Light preload as supplied: 1,395 N with an axial rigidity of 170 N/µm in a DB or DF pair.
Shaft abutment diameter da: 132 mm minimum. Housing abutment diameters Da 203 mm and Db 208 mm maximum. Shaft and housing fillet radii ra 2 mm and rb 1 mm maximum. Chamfer dimensions r 2.1 mm and r1 1.1 mm minimum. Recommended grease charge: 29 g per bearing. Internal clearance: N/A, preloaded matched pair.
Direct equivalents at the same 15° angle, P4 class and light preload: SKF 7224 CD/P4ADGA, Fafnir 2MM224WI DUL, RHP 7224CTRDULP4, FAG B7224C.T.P4S.UL. Related size: 7224A5 shares the 120 x 215 x 40 mm envelope at a 25° contact angle, which raises thrust capacity and lowers the speed ceiling, so it is a different part rather than a substitution.
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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