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SKF7211ACDP4ADGASuper Precision Angular Contact Ball Bearing — 55 mm ID, 100 mm OD, 21 mm Width, 25° Contact Angle, Extra Light Preload, P4A

Condition: New

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1 in stock

Matched pair of super-precision angular contact ball bearings, 55 x 100 x 21 mm, 25° contact angle, extra light preload, P4A. SKF D design, universally matchable.

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$327.96

1 in stock

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Specifications

Key Specifications

MFR / BrandSKF
MPN7211ACDP4ADGA
Model7211ACD/P4A DGA
Bearing TypeAngular Contact Ball Bearing, Open
ID55 mm
OD100 mm
Width21 mm

Technical Specifications

MaterialBearing Steel
Series7200
LubricantOil/Grease
PreloadExtra light, 330 N
Total Width42 mm (pair)
Mpn Variants7211 ACD/P4ADGA, 7211-ACD/P4ADGA, 7211ACDP4ADGA, 7211-ACDP4ADGA, 7211-ACD-P4A-DGA
Precision ClassABEC 7 / P4A
Dynamic Load Rating85,200 N (pair)
Static Load Rating81,500 N (pair)
Rolling ElementsBall
Number Of Rows1
Bore TypeStraight
Snap Ring IncludedNo
Limiting Speed10,530 rpm grease; 16,200 rpm oil-air (back-to-back pair)
Harmonization Code8482.10.50
Contact Angle25°
Mounting ArrangementUniversally matchable pair (back-to-back, face-to-face or tandem)

Cross-References

Cross Reference 1FAG B7211-E-T-P4S-DUL – light vs extra light preload
Cross Reference 2NSK 7211A5TYNDULP4 – light preload, polyamide cage
Cross Reference 3Fafnir 3MM211WI CR DUL – light vs extra light preload
Seller Part Number: B-BK1#PIDZRZ

Product Description

What this part is

SKF 7211 ACD/P4ADGA matched set of two super-precision, high-capacity D design single row angular contact ball bearings, universally matchable as back-to-back, face-to-face or tandem. Bore Diameter: 55 mm. Outside Diameter: 100 mm. Width: 21 mm per bearing. Total Width: 42 mm (pair). Contact Angle: 25°.

Decoding the designation

7211 — ISO 72 series, 55 mm bore.

ACD — 25° contact angle, SKF high-capacity D internal design.

P4A — SKF tolerance class: ISO P4 dimensional accuracy with P2 running accuracy.

DG — matched set of two bearings, universally matchable in any arrangement.

A — extra light preload.

What these specs mean in practice

Dynamic Load Rating: 85,200 N (pair). Static Load Rating: 81,500 N (pair). Attainable Speed: 10,530 rpm grease; 16,200 rpm oil-air (back-to-back pair; single bearing 13,000 rpm grease, 20,000 rpm oil-air). Preload: Extra light, 330 N (back-to-back or face-to-face). Axial Stiffness: 172 N/µm. Precision Class: ABEC 7 / P4A. Ball Diameter: 14.288 mm. Number of Balls: 15 per bearing.

Mounting data

Shaft Abutment Diameter (da min): 64 mm. Housing Abutment Diameter (Da max): 91 mm. Fillet Radius (ra max): 1.5 mm. Chamfer (r1,2 min): 1.5 mm. Oil Nozzle Position (dn): 72.6 mm. Reference Grease Quantity: 8.6 cm³ per bearing.

Quantity and configuration

Unit Quantity: 2 Pcs. One factory-matched pair.

Interchange guidance

Same 55 x 100 x 21 mm size, 25° contact angle and P4-level precision, but light rather than extra light preload: FAG B7211-E-T-P4S-DUL, NSK 7211A5TYNDULP4 (polyamide cage), Fafnir 3MM211WI CR DUL.

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