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FafnirAngular Contact Ball Bearing – 70 mm ID, 125 mm OD, 24 mm Width, 25° Contact Angle, Medium Preload Duplex Pair, ABEC 7/9

Condition: New

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1 in stock

Super-precision angular contact ball bearing, 70 x 125 x 24 mm, 25° contact angle, medium preload duplex pair, phenolic cage, ABEC 7/9 spindle grade.

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$395.42

1 in stock

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Specifications

Key Specifications

MFR / BrandFafnir
GTIN087796070875
Model3 MM 214 WI CR DUM / 7214 A/A5/ACD/E T DUM P4 / B7214E
Bearing TypeAngular Contact Ball Bearing, Open
ID70 mm
OD125 mm

Technical Specifications

MaterialBearing Steel
Series200WI
LubricantGrease or oil
PreloadMedium
Base Number3MM214WI
Overall Width24 mm
Mpn Variants3MM214WICRDUM; 3MM214WI-CR-DUM; 3-MM-214-WI-CR-DUM; 3 MM 214 WI CR DUM; 7214AC-T-P4S-DUM
Precision ClassABEC 7/9 / P4S
Dynamic Load Rating80,200 N
Static Load Rating57,400 N
Precision RatingABEC 7/9 / P4S
Rolling ElementsBall
Cage MaterialPhenolic
Number Of Rows1
Bore TypeStraight
Snap Ring IncludedWithout Snap Ring
Limiting Speed11,300 rpm grease; 20,600 rpm oil
Internal ClearanceN/A
Harmonization Code8482.10.50
Contact Angle25°
Mounting ArrangementDuplex pair (DUM)
Bearing MaterialChrome steel

Cross-References

Cross Reference 1Timken 7214AC-T-P4S-DUM
Cross Reference 2SKF 7214 ACD/P4ADGC
Cross Reference 3FAG B7214-E-T-P4S-DUM
Cross Reference 4NSK 7214A5TRDUMP4
Cross Reference 5RHP 7214ETDUMP4
Cross Reference 67214 AC – standard precision, single bearing
Seller Part Number: B-AK5B5#MXXX4N

Product Description

What this part is

Fafnir 3MM214WI-CR-DUM super-precision angular contact ball bearing, 200WI spindle series, 70 x 125 x 24 mm. Bore Diameter: 70 mm. Outside Diameter: 125 mm. Overall Width: 24 mm per bearing. Contact Angle: 25°. Precision Class: ABEC 7/9 / P4S. Cage Material: Phenolic. Rolling Elements: Ball. Bearing Material: Chrome steel. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. GTIN: 087796070875.

Decoding the designation

3 — 25° contact angle.

MM — Fafnir super-precision spindle execution, ISO P4S tolerance class.

214 — 200 series, bore code 14, giving a 70 mm bore.

WI — low shoulder on both rings, the spindle bearing form.

CR — phenolic cage.

DUM — duplex pair, medium preload.

What these specs mean in practice

Dynamic Load Rating: 80,200 N per bearing. Static Load Rating: 57,400 N. Limiting Speed: 11,300 rpm grease; 20,600 rpm oil. Lubricant: grease or oil.

A 25° contact angle carries more thrust and less speed than a 15° execution of the same size, which is why this bearing runs to 20,600 rpm on oil. Medium preload sits between the light and heavy grades: more stiffness than light, lower heat generation than heavy. Preload and internal clearance are mutually exclusive, so Internal Clearance: N/A.

The phenolic cage runs quietly at high surface speed and holds lubricant, which suits continuous spindle duty.

Mounting data

Shaft Backing Shoulder Diameter: 80.3 mm (3.160 in). Housing Backing Shoulder Diameter: 115.8 mm (4.560 in). Maximum housing fillet radius that the bearing corners will clear: 1.5 mm (0.059 in).

Quantity and configuration

Unit Quantity: 2 Pcs. Mounting Arrangement: duplex pair, medium preload. The two bearings are ground as a matched set and mount together on one shaft seat.

Interchange guidance

Timken 7214AC-T-P4S-DUM, SKF 7214 ACD/P4ADGC, FAG B7214-E-T-P4S-DUM, NSK 7214A5TRDUMP4 and RHP 7214ETDUMP4 share the 70 x 125 x 24 mm size, the 25° angle, P4S tolerance and medium preload. A standard-precision 7214AC has the same size and angle at a looser tolerance class.

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