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NTNAngular Contact Ball Bearing Pair – 60 mm Bore, 110 mm OD, 22 mm Wide, 15° Contact Angle, ABEC 7, Universally Flush Ground

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1 in stock

Universally flush ground angular contact ball bearing pair, 60 x 110 x 22 mm each, 15° contact angle, ABEC 7, normal preload, polyamide cage.

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$328.12

1 in stock

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Specifications

Key Specifications

MFR / BrandNTN
GTIN4547359443455
Model7212C GD2 / GNP4
Bearing TypeAngular Contact Ball Bearing, Open
ID60 mm
OD110 mm
Width22 mm

Technical Specifications

MaterialBearing Steel
Series02
Lubricantgrease or oil
PreloadNormal
Base Number7212C
Total Width44 mm
Overall Width22 mm
Mpn Variants7212CGD2/GNP4; 7212CGD2GNP4; 7212 CG D2/GNP4; 7212CG D2 GNP4; 7212C
Precision ClassABEC 7 / P4
Cage TypeFibreglass-reinforced, one-piece
Dynamic Load Rating104,000 N
Static Load Rating99,000 N
Rolling ElementsBall
Item Weight1.52 kg (3.35 lb)
Cage MaterialPolyamide
Number Of Rows1
Bore TypeStraight
Limiting Speed7,700 rpm grease; 10,000 rpm oil
Harmonization Code8482.10.50
Contact Angle15°
Mounting ArrangementUniversally matchable; back-to-back, face-to-face or tandem
Bearing MaterialHigh carbon chrome steel

Cross-References

Cross Reference 1NTN 7212CDB/GNP4 – 15°, fixed back-to-back set
Cross Reference 2NSK 7212CTRDUP4 – 15°, phenolic cage
Cross Reference 3RHP 7212CTDULP4 – 15°, light preload, phenolic cage
Cross Reference 4SKF 7212 CD/P4ADGB – 15°, light preload
Cross Reference 5FAG B7212-C-T-P4S-UL – 15°, P4S, phenolic, light preload
Cross Reference 6Fafnir 2MM212WI DUL – 15°, P4S, light preload
Cross Reference 7Koyo 7212CDB – 15°, fixed back-to-back set
Cross Reference 8SNR 7212 CG1 DU J74 – 15°, light preload
Cross Reference 9Nachi 7212CYDUP4 – 15°, light preload
Seller Part Number: B-AD5B1#DTBPYM

Product Description

What this part is

NTN 7212CGD2/GNP4 angular contact ball bearings, supplied as a universally flush ground matched pair. Bore Diameter: 60 mm. Outside Diameter: 110 mm. Overall Width: 22 mm per bearing, 44 mm across the pair. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Preload: Normal. Cage Material: Polyamide. Cage Type: Fibreglass-reinforced, one-piece. Rolling Elements: Ball. Bearing Material: High carbon chrome steel. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. Item Weight: 1.52 kg (3.35 lb) for the pair. Unit Quantity: 2 Pcs.

Decoding the designation

72 — ISO dimension series 02 angular contact ball bearing, the medium section for a 60 mm bore.

12 — bore code. Multiplied by five it gives the 60 mm bore.

C — 15° contact angle. The shallow angle favours speed and radial stiffness.

G — universal flush ground faces. Inner and outer rings are the same width and the face steps are set at manufacture, so the pair mounts back-to-back, face-to-face or in tandem and reaches the same preload either way.

D2 — supplied as two bearings, matched as a set.

GN — normal preload.

P4 — ISO Class 4, equivalent to ABEC 7.

What these specs mean in practice

Dynamic Load Rating: 104,000 N for the pair. Static Load Rating: 99,000 N for the pair. Both figures are the matched-set values, which is why they sit above the single-bearing numbers for a 7212C.

Limiting Speed: 7,700 rpm grease; 10,000 rpm oil. Oil takes heat out of the contact that grease leaves behind, and the gap between the two figures is that cooling.

Contact Angle: 15°. A shallow angle puts more of the load path into the radial direction and lets the bearing run faster. A 25° or 30° execution of the same size trades speed for thrust capacity.

Preload: Normal. Preload sets running stiffness and removes the play that would let a spindle chatter. Because the set is preloaded, there is no running clearance to specify.

Cage Material: Polyamide. The fibreglass-reinforced nylon cage is quiet, light and low-friction, and it suits the speed range this bearing is built for.

Mounting data

Chamfer r: 1.5 mm. Chamfer r1: 1.0 mm. Shaft shoulder da min: 68.5 mm. Inner-ring abutment db min: 65.5 mm. Housing shoulder Da max: 101.5 mm. Outer-ring abutment Db max: 104.5 mm. Abutment fillet ras max: 1.5 mm, r1as max: 1.0 mm.

Inner ring recess diameters d1: 77.0 mm and 96.0 mm. Outer ring D1: 96.0 mm, D2: 102.9 mm.

Universal flush grinding means no custom spacer is needed to reach the stated preload; clamping the rings solid delivers it.

Quantity and configuration

Two bearings, factory matched. Unit Quantity: 2 Pcs. Mounting Arrangement: universally matchable, back-to-back, face-to-face or tandem.

Interchange guidance

Every cross listed sits on the same 60 x 110 x 22 mm envelope at 15°. The variables that decide whether one is a straight swap are the precision class, the preload level and the grinding scheme, and each cross states where it differs.

A set ground for light preload will not deliver the same stiffness or the same running temperature as a normal-preload set, so match the preload code as well as the size.

Searchable forms of the number: 7212CGD2/GNP4, 7212CGD2GNP4, 7212 CG D2/GNP4, 7212CG D2 GNP4, 7212C.

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