Central Surplus Bearing Finder
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Matched back-to-back angular contact ball bearing pair, 55 x 100 x 21 mm, 30 degree contact angle, ABEC 7 precision, 51 kN dynamic capacity, open.
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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.
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Angular Contact Ball Bearing - Straight Bore, 55 mm ID, 100 mm OD, 21 mm Width, Open, 15° Contact Angle, Light Preload.$117.94| MFR / Brand | NTN |
|---|---|
| MPN | 7211T1DBP4C7 |
| Model | 7211 T1 DB P4 C7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 55 mm |
| OD | 100 mm |
| Width | 21 mm |
| Base Number | 7211 |
|---|---|
| Total Width | 42 mm |
| Overall Width | 21 mm |
| Bore Shaft Size | 55 mm |
| Mpn Variants | 7211; 7211T1; 7211DB; 7211T1-DB-P4-C7; 7211T1DBP4C7 |
| Arrangement Configuration | Matched back-to-back duplex pair (DB) |
| Precision Class | ISO Class 4 |
| Dynamic Load Rating C1 | 51.00 kN (11,465 lbf) |
| Additional Attributes | Shaft abutment da min 63.5 mm; db min 60.5 mm; housing abutment Da max 91.5 mm; Db max 94.5 mm; shaft fillet radius r min 1.5 mm; r1 min 1.0 mm; effective load centre a 33.0 mm |
| Material | High Carbon Chrome Steel |
| Min Temp | -40 °C |
| Dynamic Load Rating | 51.00 kN (11,465 lbf) |
| Static Load Rating | 39.50 kN (8,880 lbf) |
| Precision Rating | ABEC 7 |
| Series | 72 |
| Rolling Elements | Ball |
| Max Temp | 120 °C |
| Item Weight | 0.610 kg (1.338 lb) per bearing |
| Limiting Speed | 7100 |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Lubricant | Grease or oil |
| Contact Angle | 30° |
| Mounting Arrangement | Back-to-back (DB) |
| Design Units | Metric |
| Part Number | 7211T1DBP4C7 |
This is an NTN 7211T1DBP4C7 angular contact ball bearing supplied as a matched back-to-back duplex pair. Each bearing measures Bore / Shaft Size: 55 mm, Outside Diameter: 100 mm, Overall Width: 21 mm, and the mounted pair stacks to a Total Width: 42 mm. Item weight: 0.610 kg (1.338 lb) per bearing. Rolling Elements: Ball. Number Of Rows: 1. Closure Type: Open. Seal type: Open. Bore Type: Straight. Material: High Carbon Chrome Steel. Design Units: Metric.
7211 — the ISO 7211 size, 55 x 100 x 21 mm; with no angle letter NTN builds it at 30°.
DB — back-to-back matched pair; the load lines diverge, giving the pair a wide effective spread and thrust capacity in both directions.
P4 — ISO Class 4, ABEC 7.
Contact Angle: 30°. Dynamic load rating: 51.00 kN (11,465 lbf). Static load rating: 39.50 kN (8,880 lbf). Limiting Speed: 7,100 rpm grease / 9,500 rpm oil. Precision Class: ISO Class 4. Precision rating: ABEC 7. Lubricant: Grease or oil. Max temp: 120 °C. Min temp: -40 °C. The 30° angle biases capacity toward axial load, and Class 4 rings hold tighter running accuracy than the general-purpose classes.
Shaft fillet radius r min: 1.5 mm. Second fillet radius r1 min: 1.0 mm. Shaft abutment da min: 63.5 mm. Shaft abutment db min: 60.5 mm. Housing abutment Da max: 91.5 mm. Housing abutment Db max: 94.5 mm. Effective load centre a: 33.0 mm.
Unit Quantity: 2 Pcs. Arrangement / Configuration: Matched back-to-back duplex pair (DB). Mounting Arrangement: Back-to-back (DB). The two bearings ship together as a ground and matched set.
Series: 72. Base Number: 7211. Part Number: 7211T1DBP4C7. MPN Variants: 7211, 7211T1, 7211DB, 7211T1-DB-P4-C7, 7211T1DBP4C7.
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