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Fafnir2MM212WI CRAngular Contact Ball Bearing – Straight Bore, 60 mm ID, 110 mm OD, 22 mm Width, Open, 15° Contact Angle, ABEC 7

Condition: New

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1 in stock

Super precision angular contact ball bearing, 60 x 110 x 22 mm, 15° contact angle, phenolic cage, ABEC 7/9. Open, chrome steel, for spindle service.

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$151.76

1 in stock

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Specifications

Key Specifications

MFR / BrandFafnir
MPN2MM212WI CR
GTIN087796070677
Model2MM 212 WI / ABEC7 / 7212-C
Bearing TypeAngular Contact Ball Bearing, Open
ID60 mm
OD110 mm
Width22 mm

Technical Specifications

MaterialBearing Steel
Series200WI
Dynamic Load Rating71,000 N
Static Load Rating48,900 N
Precision RatingISO P4S (ABEC 7/9)
Rolling ElementsBall
Item Weight0.79 kg (1.74 lb)
Cage MaterialPhenolic
Number Of Rows1
Bore TypeStraight
Harmonization Code8482.10.50
Contact Angle15°
Limiting Speed13,200 rpm grease; 26,400 rpm oil
Base Number212
Overall Width22 mm
Mpn Variants2MM212WI-CR; 2MM212WICR; 2MM212WI; 2MM-212-WI-CR; 2MM 212 WI CR; 7212C-T-P4S
Precision ClassABEC 7 / P4
Additional AttributesMax Housing Fillet Radius: 1.5 mm; Shaft Backing Shoulder Diameter: 69.3 mm; Housing Backing Shoulder Diameter: 101.4 mm
Bearing MaterialChrome Steel

Cross-References

Cross Reference 1SKF 7212 CD/P4A
Cross Reference 2FAG B7212-C-T-P4S
Cross Reference 3NSK 7212CTRP4
Cross Reference 4NTN 7212UC/GNP4
Cross Reference 5SKF 7212 ACD/P4A - 25 deg contact angle, not 15 deg
Seller Part Number: B-AP3B5#AJTUEZ

Product Description

What this part is:

Fafnir 2MM212WI-CR super precision angular contact ball bearing. Series: 200WI. Base Number: 212. Bore Diameter: 60 mm. Outside Diameter: 110 mm. Overall Width: 22 mm. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1. Bearing Material: Chrome Steel. Item Weight: 0.79 kg (1.74 lb). Unit Quantity: 1 Pc. GTIN: 087796070677.

Decoding the designation:

2MM — Fafnir super precision execution at a 15° contact angle, built to ISO P4S.

212 — 200WI dimension series at a 60 mm bore. The ISO equivalent is 7212.

WI — low shoulder on both rings, the form used for duplex mounting.

CR — phenolic cage.

What these specs mean in practice:

Dynamic Load Rating: 71,000 N. Static Load Rating: 48,900 N. Limiting Speed: 13,200 rpm grease; 26,400 rpm oil.

Contact Angle: 15°. The shallow angle favours speed and radial stiffness over thrust capacity, and it is the reason a 60 mm bore bearing reaches 26,400 rpm on oil.

Cage Material: Phenolic. Fabric-base phenolic is light and low in inertia, so the cage tolerates rapid acceleration and holds oil in its own structure.

Precision Class: ABEC 7 / P4. Running accuracy at this class holds shaft position to a few microns, which is what the 200WI range is ground for.

Item Weight: 0.79 kg (1.74 lb).

Mounting data:

Max Housing Fillet Radius: 1.5 mm. Shaft Backing Shoulder Diameter: 69.3 mm. Housing Backing Shoulder Diameter: 101.4 mm.

Quantity and configuration:

Unit Quantity: 1 Pc. One single bearing, WI form, with the low ring shoulders that let it be stacked with others of the same designation.

Interchange guidance:

The ISO designation for this size is 7212 at P4 precision. Cross-Reference 1: SKF 7212 CD/P4A. Cross-Reference 2: FAG B7212-C-T-P4S. Cross-Reference 3: NSK 7212CTRP4. Cross-Reference 4: NTN 7212UC/GNP4. Related, 25° contact angle on the same 60 x 110 x 22 mm size: SKF 7212 ACD/P4A.

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