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Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Availability:
9 in stock
Super-precision angular contact ball bearing, 45 x 85 x 19 mm, 25° contact angle, ball-guided cage, medium preload, matched duplex pair. Cr 49 kN.
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$198.05
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| MFR / Brand | NSK |
|---|---|
| MPN | 7209A5TYDUM |
| Model | 7209 A5 TY DUM / 3MM209 WI CR DUM / B7209E |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 45 mm |
| OD | 85 mm |
| Width | 19 mm |
| Material | High Carbon Chrome Steel |
|---|---|
| Series | 72 |
| Lubricant | Grease or oil |
| Preload | Medium |
| Base Number | 7209 |
| Total Width | 38 mm (duplex pair) |
| Bore Shaft Size | 45 mm |
| Mpn Variants | 7209A5TYDUM, 7209-A5-TY-DUM, 7209E |
| Additional Attributes | Effective load centre a: 24.7 mm; shaft abutment da min 52 mm; housing abutment Da max 78 mm; Db max 80 mm; chamfer r min 1.1 mm; r1 min 0.6 mm; fillet ra max 1.0 mm; rb max 0.6 mm; permissible axial load Pa 23.3 kN; medium preload 875 N; axial rigidity 212 N/um; measured axial clearance -22 um |
| Cage Type | Ball-guided |
| Dynamic Load Rating | 49,000 N |
| Static Load Rating | 27,600 N |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Limiting Speed | 15,400 rpm grease; 23,100 rpm oil-air |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25° |
| Cross Reference 1 | 7209E |
|---|---|
| Cross Reference 2 | Fafnir 3MM209WICRDUM |
| Cross Reference 3 | RHP B7209E |
NSK 7209A5TYDUM super-precision single-row angular contact ball bearing, 45 x 85 x 19 mm, supplied as a universally ground duplex pair (2 Pcs) with medium preload. ISO 72 dimension series, 25° contact angle, ball-guided cage, open.
7209 — NSK’s number for the ISO 7209 size, 45 x 85 x 19 mm.
A5 — 25° contact angle.
TY — ball-guided cage.
DU — universally ground duplex pair.
M — medium preload.
Bore Diameter: 45 mm. Outside Diameter: 85 mm. Width: 19 mm per bearing. Total Width: 38 mm (duplex pair). Contact Angle: 25°. Dynamic Load Rating (Cr): 49,000 N. Static Load Rating (C0r): 27,600 N. Permissible Axial Load (Pa): 23,300 N. Limiting Speed: 15,400 rpm grease; 23,100 rpm oil-air. Preload: Medium, 875 N for the pair. Axial Rigidity: 212 N/µm. Axial Clearance: −22 µm. Cage Type: Ball-guided. Rolling Elements: Steel balls. Closure Type: Open. Unit Quantity: 2 Pcs. Country of Origin: Japan.
Effective Load Centre (a): 24.7 mm. Shaft Abutment Diameter (da min): 52 mm. Housing Abutment Diameter (Da max): 78 mm. Second Housing Abutment Diameter (Db max): 80 mm. Chamfer (r min): 1.1 mm. Chamfer (r1 min): 0.6 mm. Shaft and Housing Fillet Radius (ra max): 1.0 mm. Fillet Radius (rb max): 0.6 mm.
Cross-Reference 1: 7209E, the RHP and Fafnir 25° notation carried on the carton. Cross-Reference 2: Fafnir 3MM209WICRDUM. Cross-Reference 3: RHP B7209E. MPN forms: 7209A5TYDUM, 7209-A5-TY-DUM, 7209 A5 TY DUM.
Bore 45 mm, outside diameter 85 mm, width 19 mm per bearing, 38 mm across the pair.
25°. The A5 in the designation denotes a 25° contact angle.
Dynamic load rating 49.0 kN, static load rating 27.6 kN, limiting speed 15,400 rpm on grease and 23,100 rpm on oil-air, per NSK.
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