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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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Fafnir 2MM220WICRSUM angular contact ball bearing, 100 x 180 x 34 mm, 15° contact angle, phenolic cage, medium preload, P4S. Two singles. Universally ground.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 2MM220WICRSUM |
| GTIN | 087796322035 |
| Model | 2MM220WI-SUM |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 100 mm |
| OD | 180 mm |
| Width | 34 mm |
| Material | Bearing Steel |
|---|---|
| Series | 2MM200WI |
| Preload | Medium |
| Base Number | 2MM220WI |
| Industry Terms | Super precision spindle bearing; machine tool bearing; universally ground single; ABEC 7 spindle bearing |
| Common Misspellings | 2MM220WICRSU M; 2MM22OWISUM; 2MM220W1SUM; 2MM220-WI-CR-SUM |
| Application Types | Machine tool spindles; CNC milling and boring spindles; precision grinding spindles; heavy-duty rotary tables |
| Overall Width | 34 mm |
| Mpn Variants | 2MM220WICRSUM; 2MM220WI-SUM; 2MM-220-WI-SUM; 2MM 220 WI CR SUM; 7220C-T-P4S-SUM |
| Precision Class | ABEC 7/9 / P4S |
| Dynamic Load Rating | 165,200 N |
| Static Load Rating | 126,800 N |
| Precision Rating | ISO P4S (ABEC 7/9) |
| Rolling Elements | Ball |
| Item Weight | 3.209 kg (7.07 lb) |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Limiting Speed | 8,000 rpm grease; 16,000 rpm oil |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universally ground single (SU) |
| Design Units | Metric |
| Bearing Material | Bearing steel |
| Closure Type | Open |
| Cross Reference 1 | FAG B7220-C-T-P4S-UM – 15°, phenolic, medium preload |
|---|---|
| Cross Reference 2 | NSK 7220CTRSUMP4 – 15°, phenolic, medium preload |
| Cross Reference 3 | RHP 7220CTSUMP4 – 15°, phenolic, medium preload |
| Cross Reference 4 | GMN S6220 C TA P4 DUM – 15°, phenolic cage |
| Cross Reference 5 | Fafnir 2MM220WI-SUL – light vs medium preload |
| Cross Reference 6 | SKF 7220 CD/P4A – 15°, single, not universal ground |
| Cross Reference 7 | NTN 7220CP4 – 15°, single, not universal ground |
| Cross Reference 8 | Koyo 7220C-P4 – 15°, single, not universal ground |
| Cross Reference 9 | NACHI 7220C/P4 – 15°, single, not universal ground |
Fafnir 2MM220WICRSUM is a super-precision angular contact ball bearing, universally ground as a single for duplex service, ISO 7220 size. Unit Quantity: 2 Pcs. Bore Diameter: 100 mm. Outside Diameter: 180 mm. Overall Width: 34 mm. Contact Angle: 15°. Closure Type: Open. GTIN: 087796322035.
2MM — Timken Fafnir super-precision, 15° contact angle, P4S precision grade (ABEC 7/9).
220 — 200WI dimension series, bore code 20: ISO 7220 size, 100 x 180 x 34 mm.
WI — Timken standard angular contact construction: full shoulders on both sides of the inner ring and a low shoulder on the outer ring.
CR — phenolic composition cage.
SUM — single, universally ground, medium preload.
Dynamic Load Rating: 165,200 N per bearing (Timken C1). Static Load Rating: 126,800 N per bearing (Timken C0). Limiting Speed: 8,000 rpm grease; 16,000 rpm oil. Preload: Medium. Precision Class: ISO P4S (ABEC 7/9). Cage Material: Phenolic. Rolling Elements: Ball. Number of Rows: 1. Bearing Material: Bearing steel. Item Weight: 3.209 kg (7.07 lb) per bearing.
Bore Diameter: 100 mm. Outside Diameter: 180 mm. Overall Width: 34 mm. Shaft Backing Shoulder Diameter: 114.4 mm (4.510 in). Housing Backing Shoulder Diameter: 166 mm (6.540 in). Maximum housing fillet radius: 2.1 mm (0.079 in). Series: 2MM200WI. Harmonization Code: 8482.10.50.
FAG B7220-C-T-P4S-UM: 15°, phenolic, medium preload. NSK 7220CTRSUMP4: 15°, phenolic, medium preload. RHP 7220CTSUMP4: 15°, phenolic, medium preload. GMN S6220 C TA P4 DUM: 15°, phenolic cage. Fafnir 2MM220WI-SUL: light preload against medium. SKF 7220 CD/P4A, NTN 7220CP4, Koyo 7220C-P4 and NACHI 7220C/P4: 15° singles, not universal ground.
Bore 100 mm, outside diameter 180 mm, width 34 mm, ISO 7220 size.
SUM is a single bearing, universally ground, at medium preload.
Dynamic load rating 165,200 N and static load rating 126,800 N per bearing, with limiting speeds of 8,000 rpm grease and 16,000 rpm oil.
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Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
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Our team can locate, cross-reference, and source all parts.
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