Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
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Super precision angular contact ball bearings, 65 x 100 x 18 mm, 25° contact angle, medium preload, ABEC 7/9. Back-to-back matched pair for spindles.
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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.
Super Precision Angular Contact Ball Bearing Set of 2 - Straight Bore, 65 mm ID, 100 mm OD, 18 mm Width, Open, 25° Contact Angle, Light Preload$366.38
Angular Contact Ball Bearing – 65 mm ID, 100 mm OD, 18 mm Width, 25° Contact Angle, Heavy Preload, Phenolic Cage, ABEC 7/9$302.06
Angular Contact Ball Bearing - 65 mm ID, 100 mm OD, 18 mm Width, Open, 15° Contact Angle, Phenolic Cage, Light Preload, High Speed HX, ABEC 7/9 P4S$412.75
Angular Contact Ball Bearing - 65 mm ID, 100 mm OD, 18 mm Width, Open, 15°, PEEK Cage to 250°C, ABEC 7$52.49| MFR / Brand | Fafnir |
|---|---|
| Model | 7013E T DUM P4 / 2MM 9113 WI CR PRJ DUM 7013ACD |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 65 mm |
| OD | 100 mm |
| Width | 18 mm |
| Material | Bearing Steel |
|---|---|
| Series | 9100 |
| Preload | Medium |
| Base Number | 9113 |
| Overall Width | 18 mm |
| Mpn Variants | 3MM9113WI-PRJ-DUM; 3MM9113WIPRJDUM; 3MM-9113-WI-PRJ-DUM; 3MM 9113 WI CR PRJ DUM; 3MM9113WICRDUM; 7013E-T-P4S-DUM; 7013E T DUM P4 |
| Precision Class | ABEC 7 / P4 |
| Additional Attributes | Max Housing Fillet Radius: 1 mm; Shaft Backing Shoulder Diameter: 72.1 mm; Housing Backing Shoulder Diameter: 93.2 mm |
| Dynamic Load Rating | 37,700 N |
| Static Load Rating | 31,000 N |
| Precision Rating | ISO P4S (ABEC 7/9) |
| Rolling Elements | Ball |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Limiting Speed | 12,600 rpm grease; 22,800 rpm oil |
| Internal Clearance | N/A |
| Harmonization Code | 8482.10.50.68 |
| Contact Angle | 25° |
| Mounting Arrangement | Back-to-back (DUM) |
| Bearing Material | Chrome Steel |
| Cross Reference 1 | Timken 7013E-T-P4S-DUM |
|---|---|
| Cross Reference 2 | SKF 7013 ACD/P4ADGB |
| Cross Reference 3 | FAG B7013-E-T-P4S-UL |
| Cross Reference 4 | NSK 7013A5TRDUMP4 |
| Cross Reference 5 | NTN 7013UADG/GNP4 |
| Cross Reference 6 | RHP 7013X3TRDUMP4 |
| Cross Reference 7 | SKF 7013 CD/P4ADGB (related, 15° contact angle) |
Fafnir 3MM9113WI-PRJ-DUM super precision angular contact ball bearings, supplied as a factory-matched back-to-back pair. Series: 9100WI. Base Number: 9113. Bore Diameter: 65 mm. Outside Diameter: 100 mm. Overall Width: 18 mm per bearing. Contact Angle: 25°. Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. Preload: Medium. Mounting Arrangement: Back-to-back (DUM). Internal Clearance: N/A.
3MM — Fafnir super precision execution at a 25° contact angle, built to ISO P4S.
9113 — 9100WI dimension series at a 65 mm bore. The ISO equivalent is 7013.
WI — low shoulder on both rings, the form used for duplex mounting.
DUM — two bearings universally ground as a matched set, mounted back to back, at medium preload.
Dynamic Load Rating: 37,700 N per bearing. Static Load Rating: 31,000 N per bearing. Limiting Speed: 12,600 rpm grease; 22,800 rpm oil.
Contact Angle: 25°. The steeper angle sends more of a combined load down the thrust path, giving high axial rigidity. Timken builds the 3MM-WI range for work where the loading is predominantly thrust: vertical rotary surface grinders, disc grinders and heavy lathe thrust positions.
Preload: Medium. Mounting Arrangement: Back-to-back (DUM). A back-to-back pair spreads the effective load centres outward, which resists moment loading and holds a shaft square as well as concentric. Medium preload sits between the light set, which favours speed, and the heavy set, which favours stiffness.
Cage Material: Phenolic. Precision Class: ABEC 7 / P4.
Max Housing Fillet Radius: 1 mm. Shaft Backing Shoulder Diameter: 72.1 mm. Housing Backing Shoulder Diameter: 93.2 mm.
Unit Quantity: 2 Pcs. One factory-matched DUM pair, ground to run together back to back at medium preload.
The ISO designation for this envelope is 7013 at P4 precision. A matched pair from another maker interchanges where the contact angle is 25°, the precision class is P4 or P4S, the preload is medium and the arrangement is back to back. A 15° 7013 fits the same 65 x 100 x 18 mm seat and is listed as a related size rather than an interchange.
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