Ball Bearings vs. Roller Bearings: Which One Does Your Application Actually Need?
Both ball bearings and roller bearings serve the same fundamental purpose: reducing friction, supporting loads,

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Fafnir 3MM9109WI-DUL Bearing – Precision and Performance in One! Enhance the performance of your machinery with the high-quality Fafnir 3MM9109WI-DUL Bearing. Designed and manufactured in the United States, this angular contact ball bearing is a perfect solution for various industrial and mechanical applications. Boasting a bore diameter of 45 mm, an outside diameter of 75 mm, and a width of 16 mm, this bearing is engineered for precision and reliability. Compatible with multiple part numbers, including 7009-A and 3MM-9109-WI-CR-DUL, it offers versatility and seamless integration into your existing systems. When you order two pieces of this new bearing, you can enjoy competitive pricing combined with swift delivery options tailored to meet your urgent needs. We provide various shipping speeds, including next-day and expedited choices, supported by trusted carriers like UPS, FedEx, and DHL for international orders. Do not settle for less when it comes to quality and service. If you cannot find the specific part you need, contact us today; we pride ourselves on our capability to source any part quickly and efficiently! Category: Ball & Roller Bearings Condition: New Brand: FAFNIR Bearings Type: Angular Contact Ball Bearing
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM9109WI DUL |
| Model | 3MM 9109 WI CR DUL / 7009ECR DUL P4S / 7009 ACD P4A DGB / 7009-A5 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 45 mm |
| OD | 75 mm |
| Width | 16 mm |
| Advertise | 1 |
|---|---|
| Material | Bearing Steel |
| Min Temp | -40 °C |
| Cage Type | Phenolic |
| Dynamic Load Rating | 29.6 kN |
| Static Load Rating | 20.8 kN |
| Precision Rating | ABEC 7 / P4 |
| Series | 3MM9100 |
| Rolling Elements | Ball |
| Max Temp | 120 °C |
| Condition | New |
| Item Weight | 0.55 lbs |
| Cage Material | Phenolic Resin |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25 °C |
| Preload | Light |
| Mounting Arrangement | Universal |
| Internal Clearance | CN |
| Cross Reference 1 | SKF 7009 CD/P4ADGA |
|---|---|
| Cross Reference 2 | NSK 7009CTYNDULP4 |
| Cross Reference 3 | FAG B7009-C-T-P4S-DUL |
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When the original bearing is discontinued, not available or has a lengthy lead time, there
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