Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Matched three-bearing set, 180 x 250 x 33 mm each, 15° contact angle, open, tandem plus back-to-back triplex arrangement, P4A super-precision class.
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$4,550.19
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Here are some other options that might fit your project — cross-referenced equivalents and similar parts we have in stock and ready to ship. Need help choosing? Call 585-295-7880.
Angular Contact Ball Bearing — Super-Precision P4A, 180 mm ID, 250 mm OD, 33 mm Width, 15° Contact Angle, Universally Matchable, Extra Light Preload$1,624.84
Super Precision Angular Contact Ball Bearing Matched Set 180 x 250 x 33 mm, 25° Contact Angle, P4A / ABEC 7 Class, Extra-Thin 719 Section, Universally Matched Extra Light Preload, 2 Pieces$1,624.84
Angular Contact Ball Bearing — Super-Precision P4A, 180 mm ID, 250 mm OD, 33 mm Width, 25° Contact Angle, Universally Matchable, Extra Light Preload$3,249.69
Spindle Bearing — Super-Precision P4S, 180 mm ID, 250 mm OD, 33 mm Width, 25° Contact Angle, Phenolic Cage, Light Preload$1,191.84| MFR / Brand | SKF |
|---|---|
| MPN | 71936CDP4ATBTB |
| Model | 71936CD/P4ATBTB VJ150 2MM9336WI 7936 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 180 mm |
| OD | 250 mm |
| Width | 33 mm |
| Material | Chrome Steel |
|---|---|
| Series | 71900 |
| Lubricant | Oil |
| Total Width | 99 mm as a three-bearing set |
| Base Number | 71936 |
| Industry Terms | Spindle bearing set, triplex bearing set, machine tool bearing, super precision angular contact |
| Application Types | Machine tool spindles, heavily loaded spindle front positions, precision rotating equipment |
| Bore Shaft Size | 180 mm |
| Mpn Variants | 71936CDP4ATBTB, 71936 CD/P4ATBTB, 71936-CD-P4A-TBTB, 71936CD/P4ATBTB VJ150, VJ150, 7936 |
| Rolling Elements | Ball |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.28 |
| Part Number | 71936 CD/P4ATBTB |
SKF 71936 CD/P4A TBTB matched set of super-precision angular contact ball bearings. Series: 719, extra-light section. Bore: 180 mm. Outside diameter: 250 mm. Width: 33 mm per bearing. Contact Angle: 15°. Open on both faces. Country of origin: Italy. Order code on the carton: VJ150. Searchable forms include 71936CDP4ATBTB, 71936 CD/P4ATBTB and 7936.
CD: high-capacity D design at a 15° contact angle. TBTB: a factory-matched triplex arrangement — two bearings in tandem with the third mounted back-to-back against them. Precision Class: P4A, SKF’s super-precision class, equivalent to ABEC 7. VJ150: SKF matched-set order code, carried here as a searchable variant.
A TBTB triplex takes heavy thrust in the tandem direction and locates the shaft in both directions, which is the arrangement used at the front position of a heavily loaded machine tool spindle. The two tandem bearings share the main thrust so each carries a fraction of it, raising the load the position can hold and the life it reaches at that load. Dynamic Load Rating: 148 kN. Static Load Rating: 212 kN. Limiting Speed: 3,400 rpm.
Three bearings, factory matched and ground as a set. Stacked width of the set: 99 mm. Rings are marked for orientation, and the set is mounted in the marked order.
Straight bore on a cylindrical shaft seat. Matched sets carry their preload built in, so Internal Clearance reads N/A. Cage: machined, phenolic. Lubricant: oil. Operating range: -30 °C to 120 °C.
Base number: 71936. FAG equivalent: B71936-C-T-P4S. Fafnir equivalent on the same envelope: 2MM9336WI. SKF 71936 CDGA/P4A is the universally matchable single on the same 180 x 250 x 33 mm envelope, and 71936 ACD/P4ATBTB carries a 25° contact angle — each a related size rather than a direct substitution for a matched TBTB triplex.
Rockwell’s own product page for the Kinetix 6000 is down
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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