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Super-precision spindle bearing, 15° contact angle, phenolic outer-land-riding cage, ABEC 7/9 P4S, 27 kN dynamic, 17,900 rpm grease, 35,800 rpm oil.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 2MM9109WICR |
| Model | 2MM 9109 WI CR C2 / 7009 CD P4A / 109 HC |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 45 mm |
| OD | 75 mm |
| Width | 16 mm |
| Material | Steel |
|---|---|
| Condition | New – Open box |
| Base Number | 2MM9109WI |
| Condition Note | Made In USA, New Old Stock |
| Overall Width | 16 mm |
| Mpn Variants | 2MM9109WICR, 2MM-9109-WI-CR, 2 MM 9109 WI CR C2, 7009C-T-P4S |
| Precision Class | ABEC 7 / P4S |
| Cage Type | CR - Phenolic Outer Land Riding Cage |
| Dynamic Load Rating | 27,000 N |
| Static Load Rating | 19,300 N |
| Precision Rating | ABEC 7 / P4S |
| Series | 9100WI |
| Rolling Elements | Ball |
| Cage Material | Phenolic |
| Limiting Speed | 17,900 rpm grease; 35,800 rpm oil |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Lubricant | Grease or oil |
| Contact Angle | 15° |
| Preload | Zero |
| Bearing Material | Chrome steel |
| Cross Reference 1 | SKF 7009 CD/P4A |
|---|---|
| Cross Reference 2 | FAG B7009-C-T-P4S-UL |
| Cross Reference 3 | NSK 7009CTYNSULP4 |
| Cross Reference 4 | NTN 7009UCG/GNP4 |
| Cross Reference 5 | Timken Fafnir 2MM9109WICR |
| Cross Reference 6 | RHP 7009CTSULP4 |
| Cross Reference 7 | Koyo 7009C/GLP4 |
| Cross Reference 8 | SNR 7009CVUJ74 |
Fafnir 2MM9109WI-CR, a super-precision angular contact ball bearing built by Timken under the Fafnir brand for machine tool spindle service. Bore Diameter: 45 mm. Outside Diameter: 75 mm. Overall Width: 16 mm. Contact Angle: 15°. Precision Class: ABEC 7 / P4S. Cage Type: CR — phenolic outer land riding cage. Cage Material: Phenolic. Rolling Elements: Ball. Bearing Material: Chrome steel. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1. Preload: Zero.
2MM — 15° contact angle on the Fafnir super-precision range, with the MM prefix carrying ISO P4S tolerancing.
9109 — the 9100WI series, which maps to the ISO 70xx light series; this size is the ISO 7009.
WI — low shoulder on both rings, the high-speed spindle execution.
CR — phenolic outer land riding cage, guided on the outer ring land. Timken’s world part number for this execution is 7009C-T-P4S.
Dynamic Load Rating: 27,000 N. Static Load Rating: 19,300 N. Limiting Speed: 17,900 rpm grease; 35,800 rpm oil. The 15° contact angle favours speed and radial stiffness; a 25° execution on the same envelope trades speed away for axial load capacity. A phenolic cage running on the outer ring land is light and self-lubricating, which is what carries the oil speed figure. Lubricant: grease or oil.
Shaft backing shoulder diameter: 51.3 mm (2.020 in). Housing backing shoulder diameter: 69.3 mm (2.730 in). Series: 9100WI. Base Number: 2MM9109WI.
Unit Quantity: 1 Pc. Single bearing, ground to the bare 2MM9109WI-CR execution with zero built-in preload.
Direct metric super-precision equivalents at 15° and P4 class: SKF 7009 CD/P4A, FAG B7009-C-T-P4S-UL, NSK 7009CTYNSULP4, NTN 7009UCG/GNP4, RHP 7009CTSULP4, Koyo 7009C/GLP4, SNR 7009CVUJ74. Searchable forms of this number include 2MM9109WICR, 2MM-9109-WI-CR, 2 MM 9109 WI CR C2 and 7009C-T-P4S.
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