Fafnir3MM9124WICRDULSuper-Precision Angular Contact Ball Bearing Duplex Pair, 120 mm Bore, 180 mm OD, 28 mm Width, 25 Degree Contact Angle, Light Preload, ABEC 7 / P4S

Product Description

What this part is:

Fafnir 3MM9124WICRDUL, a matched duplex pair of 2 super-precision single-row angular contact ball bearings, universally ground, supplied under the Timken brand. Open, straight bore, 25° contact angle, light preload, phenolic outer-land-riding cage. Timken World Part Number: 7024E-T-P4S-DUL.

Decoding the designation:

3MM — Fafnir super-precision angular contact prefix at the 25° contact angle.

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

WI — super-precision spindle execution with a low shoulder on both rings.

CR — phenolic cage riding on the outer ring land.

DUL — duplex pair, universally ground, light preload.

Specifications:

Bore Diameter: 120 mm (4.724 in). Outside Diameter: 180 mm (7.087 in). Bearing Width: 28 mm (1.102 in) per bearing. Total Width: 56 mm (2.205 in) as a pair.

Contact Angle: 25°. Precision Class: ISO P4S (ABEC 7/9). Preload: Light. Cage Type: CR — Phenolic Outer Land Riding Cage. Cage Material: Phenolic. Rolling Elements: Steel balls. Bearing Material: Chrome steel. Closure Type: Open. Number Of Rows: 1 per bearing. Unit Quantity: 2 Pcs.

Dynamic Load Rating (C1, 1M revs): 105,000 N (23,600 lbf). Dynamic Load Rating (C1 ISO, per row): 95,600 N (21,500 lbf). Static Load Rating (C0): 103,200 N (23,200 lbf). Limiting Speed: 6,900 rpm grease; 12,400 rpm oil.

Item Weight: 9.62 lb for the pair (4.81 lb per bearing). GTIN: 087796073210.

Dimensions and mounting:

Shaft Backing Shoulder Diameter: 132.5 mm (5.220 in). Housing Backing Shoulder Diameter: 168.3 mm (6.630 in). Maximum Shaft Fillet Radius: 2 mm (0.079 in). Outer Ring To Clear Radius: 2 mm (0.079 in). Bore Type: Straight.

Compatibility and replacement:

Cross-references: SKF 7024 ACD/P4ADGA; Timken 7024E-T-P4S-DUL (Timken world part number); same pair at medium preload 3MM9124WICRDUM and heavy preload 3MM9124WICRDUH; 2MM9124WICRDUL at 15° contact angle. Searchable variants: 3MM9124WICRDUL, 3MM9124WI-CR-DUL, 3MM9124WIDUL, 3MM 9124 WI CR DUL, 7024E, 7024 CR DUL P4S.

Frequently asked questions:

What size is the Fafnir 3MM9124WICRDUL?

Each bearing is 120 mm bore, 180 mm outside diameter and 28 mm wide; the pair is 56 mm wide.

What contact angle, preload and cage does it have?

25° contact angle (3MM), light preload (DUL) and a phenolic outer-land-riding cage (CR).

What are the load ratings and limiting speeds?

Timken publishes C1 105,000 N, C1 ISO 95,600 N per row, C0 103,200 N, with limiting speeds of 6,900 rpm on grease and 12,400 rpm on oil.