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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.
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2 in stock
NTN 7209DB angular contact ball bearing pair, 45 mm bore, 85 mm OD, 19 mm width per bearing, 30 degree contact angle, back-to-back DB. 2 Pcs.
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| MFR / Brand | NTN |
|---|---|
| MPN | 7209DB |
| Model | 7209-DB |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 45 mm |
| OD | 85 mm |
| Width | 19 mm |
| Material | High carbon chrome steel |
|---|---|
| Series | 7200 |
| Total Width | 38 mm (pair) |
| Mpn Variants | 7209DB, 7209 DB, 7209-DB |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.28 |
| Contact Angle | 30° |
| Mounting Arrangement | Back-to-back (DB) |
| Bearing Material | High carbon chrome steel |
| Industry Terms | angular contact ball bearing pair; back-to-back duplex bearing; DB matched pair; 30 degree angular contact bearing; 72 series angular contact |
| Common Misspellings | NTN 7209 DB; NTN7209DB; NTN 7209-DB; NTN 7029DB; NTN 7209BD |
| Application Types | Machine spindles; pumps; gearboxes; combined radial and axial load positions |
| Closure Type | Open |
| Cross Reference 1 | Koyo 7209DB |
|---|---|
| Cross Reference 2 | NSK 7209ADB |
NTN 7209DB is a matched pair of single-row angular contact ball bearings ground for back-to-back mounting. Unit Quantity: 2 Pcs, one matched DB pair. Bore Diameter: 45 mm. Outside Diameter: 85 mm. Width: 19 mm per bearing. Total Width: 38 mm (pair).
7209 — ISO 72 series (light section), bore code 09, 45 x 85 x 19 mm. No angle letter on the NTN 7209: 30° contact angle per the NTN 7209 page.
DB — back-to-back matched pair. Two single-row bearings ground as a set. Not a double-row bearing.
Bore Diameter: 45 mm. Outside Diameter: 85 mm. Width: 19 mm per bearing. Total Width: 38 mm (pair). Contact Angle: 30°. Mounting Arrangement: Back-to-back (DB). Number Of Rows: 1 per bearing. Rolling Elements: Ball. Closure Type: Open. Bore Type: Straight. Series: 7200. Bearing Material: High carbon chrome steel.
Fillet Radius r: 1.1 mm. Fillet Radius r1: 0.6 mm. Shaft Abutment da min: 52 mm. Housing Abutment Da max: 78 mm. Double-row (pair) width: 38 mm.
Cross-Reference: Koyo 7209DB and NSK 7209ADB, 30° back-to-back pairs on the same 45 x 85 x 19 mm envelope.
Bore Diameter: 45 mm. Outside Diameter: 85 mm. Width: 19 mm per bearing, 38 mm for the pair.
Contact Angle: 30°. Mounting Arrangement: back-to-back (DB), two single-row bearings ground as a matched set.
Unit Quantity: 2 Pcs, one matched DB pair. Closure Type: Open.
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Tapered, cylindrical, and spherical roller bearings all solve the same basic problem, carrying more load
If you pulled a bearing off general industrial equipment at random, there’s a good chance
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