Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Angular contact ball bearing DB pair, 55 x 100 x 21 mm, 30° contact angle, ABEC 5 / P5, back-to-back matched set. Dynamic Load Rating 83,000 N per pair.
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$260.96
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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.
NSK | 7211ATYDBC7P5Angular Contact Ball Bearing Matched Pair - Straight Bore, 55 mm ID, 100 mm OD, 21 mm Width Each, Open, 30° Contact Angle, Back-To-Back Duplex, ABEC 5$217.88
RHP | 7211TSULP6Angular Contact Ball Bearing - 55 mm ID, 100 mm OD, 21 mm Width, Open, 15° Contact Angle, ABEC 3 / P6, Light Preload.$42.49
SNR | 7211CDUJ74Angular Contact Ball Bearing - Straight Bore, 55 mm ID, 100 mm OD, 21 mm Width, Open, 15° Contact Angle, Light Preload.$117.94
SNR | 7211CG1DUJ74Angular Contact Ball Bearing - Straight Bore, 55 mm ID, 100 mm OD, 21 mm Width, Open, 15° Contact Angle, Light Preload.$120.20| MFR / Brand | Nachi |
|---|---|
| MPN | 7211DBP5 |
| Model | 7211 DB P4 / MM211WI CR DUL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 55 mm |
| OD | 100 mm |
| Width | 21 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Lubricant | Oil/Grease |
| Total Width | 42 mm |
| Mpn Variants | 7211DBP5, 7211-DB-P5, 7211 DB P5, 7211DB/P5 |
| Precision Class | ABEC 5 / P5 |
| Dynamic Load Rating | 83,000 N (DB pair); 51,000 N single |
| Static Load Rating | 79,000 N (DB pair); 39,500 N single |
| Rolling Elements | Ball |
| Item Weight | 0.635 kg (1.40 lb) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Limiting Speed | 4,500 rpm grease; 6,300 rpm oil |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 30° |
| Mounting Arrangement | Back-to-back (DB) matched pair |
| Cross Reference 1 | NSK 7211ADBP5 |
|---|---|
| Cross Reference 2 | Koyo 7211DBP5 |
| Cross Reference 3 | NTN 7211DB/P5 |
Nachi 7211DBP5 is a back-to-back matched pair of single-row angular contact ball bearings, ISO 72 series. Bore Diameter: 55 mm. Outside Diameter: 100 mm. Width: 21 mm per bearing, 42 mm per pair. Contact Angle: 30°. Precision Class: ABEC 5 / P5.
7211 — ISO 72 series, 55 mm bore; no angle letter denotes the 30° contact angle in the Nachi range.
DB — duplex back-to-back pair; the contact lines diverge, giving high moment stiffness and axial support in both directions.
P5 — ISO class 5 precision, ABEC 5.
Dynamic Load Rating: 83,000 N per DB pair (51,000 N single bearing). Static Load Rating: 79,000 N per DB pair (39,500 N single bearing). Limiting Speed: 4,500 rpm grease; 6,300 rpm oil for the duplex set. The 30° angle gives a strong balance of axial and radial capacity.
Item Weight: 0.635 kg (1.40 lb) per bearing. Shaft Abutment Diameter: 64 mm min. Housing Abutment Diameter: 91 mm max. Fillet Radius: 1.5 mm max. Closure Type: Open.
Unit Quantity: 2 Pcs. Mounting Arrangement: Back-to-back (DB) matched pair.
Cross-references with the same 55 x 100 x 21 mm envelope, 30° angle and ABEC 5 class in a DB pair: NSK 7211ADBP5, Koyo 7211DBP5, NTN 7211DB/P5.
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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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Our team can locate, cross-reference, and source all parts.
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