Fafnir2MM9105WI DUMAngular Contact Ball Bearing Duplex Pair – 25 mm ID, 47 mm OD, 12 mm Width, 15° Contact Angle, Medium Preload, ABEC 7/9 P4S

Product Description

What this part is:

Fafnir 2MM9105WI-DUM, a super-precision angular contact ball bearing built by Timken under the Fafnir brand and supplied as a universally ground duplex pair. Bore Diameter: 25 mm. Outside Diameter: 47 mm. Overall Width: 12 mm per bearing. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Rolling Elements: Ball. Bearing Material: Chrome steel. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. Preload: Medium. Item Weight: 0.154 kg (0.34 lb). GTIN: 0087796072077. Unit Quantity: 2 Pcs.

Decoding the designation:

2MM — 15° contact angle on the Fafnir super-precision range, ISO P4 tolerance class.

9105 — the 9100WI series, which maps to the ISO 70xx light series; this size is the ISO 7005.

WI — low shoulder on both rings, the high-speed spindle execution.

CR — phenolic cage.

DU — duplex, two bearings ground for matched mounting as a set.

M — medium preload, one step stiffer than the light L grade and one step below heavy H.

Specifications:

Dynamic Load Rating: 12,900 N per bearing. Static Load Rating: 7,400 N per bearing. Limiting Speed: 30,900 rpm grease; 61,800 rpm oil. Preload: Medium. Internal Clearance: N/A. Lubricant: Grease or oil. Mounting Arrangement: Duplex. Series: 9100WI. Base Number: 2MM9105WI. Harmonization Code: 8482.10.50.

Dimensions and mounting:

Bore Diameter: 25 mm. Outside Diameter: 47 mm. Overall Width: 12 mm per bearing. Total width of the mounted pair: 24 mm. Shaft backing shoulder diameter: 29.9 mm (1.180 in). Housing backing shoulder diameter: 42.6 mm (1.680 in). The two bearings are universally ground and can be set back-to-back, face-to-face or in tandem with the medium preload built into the grind.

Compatibility and replacement:

Super-precision numbers at 15°, P4 class and medium preload: SKF 7005 CD/P4ADGB, FAG B7005-C-T-P4S-DUM, NSK 7005CTYNDUMP4, NTN 7005UCDB/GMP4, RHP 7005CTDUMP4, Koyo 7005C DB/GMP4, SNR 7005CVDUJ84. Number forms: 2MM9105WICRDUM, 2MM-9105-WI-CR-DUM, 2 MM 9105 WI DUM, 7005C-T-P4S-DUM.

Frequently asked questions:

What are the dimensions of the Fafnir 2MM9105WI-DUM?

Bore Diameter: 25 mm. Outside Diameter: 47 mm. Overall Width: 12 mm per bearing.

What are the load ratings of the 2MM9105WI-DUM?

Dynamic Load Rating: 12,900 N per bearing. Static Load Rating: 7,400 N per bearing.

What contact angle and preload does the 2MM9105WI-DUM have?

Contact Angle: 15°. Preload: Medium.