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FafnirAngular Contact Ball Bearing – 120 mm ID, 180 mm OD, 28 mm Width, 15° Contact Angle, Phenolic Cage, Open, ABEC 7/9

Condition: New – Open box
Condition Note: Made In USA, New Old Stock

Availability:

1 in stock

Super-precision angular contact ball bearing, 120 x 180 x 28 mm, 15° contact angle, phenolic outer-land-riding cage, open, ABEC 7/9.

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List Price

$305.97

1 in stock

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Specifications

Key Specifications

MFR / BrandFafnir
Model7024C 2MM 9124 WI
Bearing TypeAngular Contact Ball Bearing, Open
ID120 mm
OD180 mm
Width28 mm

Technical Specifications

MaterialChrome steel
Series9100
LubricantGrease or oil
Base Number2MM9124WI
Total Width28 mm
Bore Shaft Size120 mm
Mpn Variants2MM9124WI, 2MM9124WICR, 2MM-9124-WI-CR, 2MM 9124 WI
Precision ClassABEC 7/9 (ISO P4S)
Dynamic Load Rating C1111,200 N
Additional AttributesBall type: steel. Shaft backing shoulder diameter: 132.5 mm. Housing backing shoulder diameter: 168.3 mm. Maximum shaft fillet radius: 2 mm. Outer ring to-clear radius: 2 mm. ISO dynamic radial rating per row: 101,000 N.
Cage TypeCR – Phenolic Outer Land Riding Cage
Dynamic Load Rating111,200 N
Static Load Rating108,500 N
Precision RatingISO P4S (ABEC 7/9)
Rolling ElementsBall
Cage MaterialPhenolic
Limiting Speed6,900 rpm grease / 13,800 rpm oil
Number Of Rows1
Bore TypeStraight
Harmonization Code8482.10.50
Contact Angle15°
Bearing MaterialChrome steel

Cross-References

Cross Reference 1Timken 7024C-T-P4S
Seller Part Number: P8#4EUUPZ

Product Description

What this part is

Fafnir 2MM9124WI super-precision angular contact ball bearing, built by Timken. Bore: 120 mm. Outside Diameter: 180 mm. Bearing Width: 28 mm. Total Width: 28 mm. Contact Angle: 15°. Precision Class: ISO P4S (ABEC 7/9). Cage Material: Phenolic. Cage Type: outer-ring land riding, machined. Rolling Elements: steel balls. Closure Type: Open. Number of Rows: 1. Series: 9100. Bore Type: Straight.

Decoding the designation

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

9124 — the 9100WI size series, ISO 7024 envelope, 120 x 180 x 28 mm.

WI — low shoulder on both rings.

CR — phenolic outer land riding cage.

What these specs mean in practice

Dynamic Radial Load Rating (C1): 111,200 N. Static Radial Load Rating (C0): 108,500 N. ISO dynamic radial rating per row: 101,000 N. Limiting Speed: 6,900 rpm on grease, 13,800 rpm on oil. Lubricant: grease or oil.

A 15° contact angle favours speed and radial stiffness over thrust capacity, which is what a large machine tool spindle bearing at this bore is usually chosen for. The phenolic cage is light, tolerates high surface speed and holds oil in its fabric base.

Quantity and configuration

Unit Quantity: 1 Pc. Single-row bearing.

Mounting data

Shaft Backing Shoulder Diameter: 132.5 mm. Housing Backing Shoulder Diameter: 168.3 mm. Maximum Shaft Fillet Radius: 2 mm. Outer Ring To-Clear Radius: 2 mm.

Interchange guidance

Timken world part number: 7024C-T-P4S. Manufacturing part number: 2MM9124WI. The same bearing is written 2MM9124WICR, 2MM-9124-WI-CR and 2MM 9124 WI.

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