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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:
1 in stock
Super precision angular contact ball bearing, 55x100x21 mm, 15 degree contact angle, universally ground duplex pair at medium preload, 66,500 N dynamic.
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$257.54
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| MFR / Brand | NSK |
|---|---|
| GTIN | 029176018855 |
| Model | 7211CTYDUMPA7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 55 mm |
| OD | 100 mm |
| Width | 21 mm |
| Material | Bearing Steel |
|---|---|
| Series | NSK 7200C Super Precision |
| Lubricant | Grease or oil/oil-air |
| Preload | Medium (M) |
| Base Number | 7211C |
| Industry Terms | Super precision bearing; spindle bearing; precision angular contact; matched pair; duplex set; 15 degree ACBB; heavy series |
| Common Misspellings | 7211 CTY DUM PA7; 7211CTYDUMP A7; 7211CTY-DUMPA7; NSK7211C; 7211 C TY DUM PA 7 |
| Application Types | Machine tool spindles; grinding spindles; high-speed motor spindles; precision rotary tables; test and metrology equipment |
| Overall Width | 21 mm |
| Mpn Variants | 7211CTYDUMPA7; 7211C TY DUM PA7; 7211-C-TY-DUM-PA7; 7211CTYDUM; 7211C/DUM |
| Additional Attributes | Effective load centre a: 20.9 mm; Permissible axial load Pa: 27.6 kN; da min 64 mm; Da max 91 mm; Db max 94 mm; r min 1.5 mm; r1 min 1 mm; ra max 1.5 mm; rb max 0.8 mm; recommended grease quantity 3.7 g per bearing; accuracy grades offered in this size: P5, P4, P4Y, P3; cage options offered: TY, TYN, TYNX, TR, T, TX, TA, TSR; preload classes offered: EL, L, M, H |
| Cage Type | Ball-guided |
| Dynamic Load Rating | 66,500 N |
| Static Load Rating | 40,000 N |
| Rolling Elements | Ball |
| Item Weight | 0.601 kg (1.325 lb) per bearing |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Limiting Speed | 14,900 rpm grease; 22,600 rpm oil |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Duplex universal (DU) |
| Bearing Material | Steel |
| Cross Reference 1 | Fafnir 2MM9211WI - 15 deg, matched duplex type |
|---|---|
| Cross Reference 2 | RHP 7211CT - 15 deg, phenolic cage, single bearing |
| Cross Reference 3 | SKF 7211 CD/P4A - 15 deg, P4A, light preload universal |
| Cross Reference 4 | FAG B7211-C-T-P4S - 15 deg, P4, phenolic cage, single |
| Cross Reference 5 | Barden 211HC - 15 deg, Barden precision series |
| Cross Reference 9 | SKF 7211 ACD/P4A - 25 deg, related size, not a substitute |
NSK 7211C TY DUM PA7 is a super-precision single-row angular contact ball bearing supplied as a universally ground duplex pair. Bore Diameter: 55 mm. Outside Diameter: 100 mm. Overall Width: 21 mm. Contact Angle: 15°. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. Bearing Material: Steel. Series: NSK 7200C super precision. Base Number: 7211C.
7211 — 72 heavy series super-precision angular contact ball bearing in the 11 bore size, giving a 55 mm bore in a larger section than the 70 series.
C — 15° contact angle.
TY — ball-guided cage.
DU — duplex universal, a matched pair that mates back-to-back, face-to-face or in tandem.
M — medium preload class.
PA7 — NSK execution suffix.
Dynamic Load Rating: 66,500 N (14,950 lbf) per bearing. Static Load Rating: 40,000 N (8,992 lbf) per bearing. Limiting Speed: 14,900 rpm grease; 22,600 rpm oil. Permissible axial load Pa: 27.6 kN per bearing. Item Weight: 0.601 kg (1.325 lb) per bearing. Lubricant: grease or oil/oil-air, at a recommended grease quantity of 3.7 g per bearing.
Effective load centre a: 20.9 mm. Shaft abutment diameter da min: 64 mm. Housing abutment diameter Da max: 91 mm. Housing abutment diameter Db max: 94 mm. Chamfer r min: 1.5 mm. Chamfer r1 min: 1 mm. Shaft fillet ra max: 1.5 mm. Housing fillet rb max: 0.8 mm.
Unit Quantity: 2 Pcs. Mounting Arrangement: duplex universal (DU). Preload: Medium (M). Load ratings and mass are stated per bearing, not for the set.
Closest first, all 15° contact angle: Fafnir 2MM9211WI (matched duplex type), RHP 7211CT (single bearing, phenolic cage), SKF 7211 CD/P4A (P4A, light preload universal), FAG B7211-C-T-P4S (P4, phenolic cage, single bearing) and Barden 211HC. These are precision types with their own preload and cage options, so match preload class and cage before substituting. SKF 7211 ACD/P4A has a 25° contact angle and is a related size, not a substitute.
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