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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:
2 in stock
NDH QH20309DTT7A angular contact ball bearing, 45 x 100 x 25 mm, 25°, ABEC 7, phenolic cage, duplex tandem heavy preload. 4 pieces, ISO 7309 size.
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$225.45
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| MFR / Brand | NDH |
|---|---|
| MPN | QH20309DTT7A |
| Model | Q H 20309 DT T7A / 7309ACD 7309 E T TUL P4 7309A5 |
| Bearing Type | Angular Contact Ball Bearing |
| ID | 45 mm |
| OD | 100 mm |
| Width | 25 mm |
| Base Number | 20309 |
|---|---|
| Industry Terms | angular contact bearing, super precision bearing, spindle bearing, matched set, duplex bearing |
| Common Misspellings | QH20309DTT7, QH 20309 DTT7A, 7309E, 7309ACD, 7309A5 |
| Application Types | machine tool spindles, high-speed spindles, precision gearboxes |
| Overall Width | 25 mm |
| Mpn Variants | QH20309DTT7A, Q-H-20309-DT-T7A, Q H 20309 DT T7A, QH20309DT, 20309 |
| Precision Class | ABEC 7 / P4 |
| Precision Rating | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Contact Angle | 25° |
| Preload | Heavy |
| Mounting Arrangement | Tandem (DT) |
| Closure Type | Open |
| Cross Reference 1 | SKF 7309 ACD/P4 - single, not DT heavy set |
|---|---|
| Cross Reference 2 | FAG B7309-E-T-P4S - single, not DT heavy set |
NDH QH20309DTT7A super-precision angular contact ball bearings, ISO 7309 size, 45 x 100 x 25 mm, ground for duplex tandem mounting with heavy preload. Unit Quantity: 4 Pcs. Condition: new.
Q — phenolic separator.
H — 25° contact angle.
20309 — NDH’s number for the ISO 7309 size, 45 x 100 x 25 mm.
DT — duplex tandem. Bearings ground as a matched set, mounted facing the same direction. Not a double-row bearing.
T — heavy preload.
7 — ABEC 7 tolerance class.
Bore Diameter: 45 mm. Outside Diameter: 100 mm. Overall Width: 25 mm. Series: 20300. Number Of Rows: 1. Rolling Elements: Ball. Contact Angle: 25°. Cage Material: Phenolic. Closure Type: Open. Precision Class: ABEC 7 / P4. Preload: Heavy. Mounting Arrangement: Tandem (DT).
Bore Diameter: 45 mm. Outside Diameter: 100 mm. Width: 25 mm. Mounting Arrangement: Tandem (DT), bearings facing the same direction.
Single-bearing cross-references in the ISO 7309 25° super-precision size: SKF 7309 ACD/P4, FAG B7309-E-T-P4S. Both are single bearings, not DT heavy-preload sets.
Bore Diameter: 45 mm. Outside Diameter: 100 mm. Width: 25 mm, ISO 7309 size.
Contact Angle: 25°, from the H. Preload: Heavy, from the T in the DT-T set code.
Unit Quantity: 4 Pcs, ground for duplex tandem (DT) mounting.
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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
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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