RHPB7016X2TADUMEP7Super Precision Angular Contact Ball Bearing Set 80x125x22 mm, 15° Contact Angle, Phenolic Cage, EP7 Precision, Medium Preload, Duplex Universally Ground

Product Description

Part identification

RHP (NSK) B7016X2TADUMEP7 is a super precision angular contact ball bearing in the ISO series 10 (70xx) light section, ground as a universally faced duplex set at medium preload. Brand: RHP (now NSK). Part Number: B7016X2TADUMEP7. Base Number: B7016X2. Series: 70. Number Of Rows: 1 per bearing. Rolling Elements: Balls. Bore Type: Straight. Closure Type: Open. Seal Type: Open. Design Units: Metric. Harmonization Code: 8482.10.50.

Dimensions and envelope

Bore: 80 mm (3.1496 in). Outside Diameter: 125 mm (4.9213 in). Overall Width: 22 mm (0.8661 in) per bearing. Chamfer r min: 1.5 mm. Chamfer r1 min: 0.6 mm. Weight: 0.851 kg (1.88 lb) per bearing.

Contact angle and precision class

Contact Angle: 15°, carried by the X2 element of the designation. Precision Class: EP7, the BS292 grade equivalent to ISO tolerance class 4 and ABEC 7. The SKF medium-preload match is 7016 CD/P4ADGC, where C also denotes 15°.

Load ratings

Basic Dynamic Load Rating Cr: 58.5 kN (58,500 N) per bearing. Basic Static Load Rating Cor: 55.5 kN (55,500 N) per bearing. Source: RHP Super Precision Angular Contact Ball Bearings catalogue, ref C859/B/E/I/03.02, Table 9, ISO series 10, row 7016CTRSU — the 15° 80x125x22 row, whose catalogue mass of 0.851 kg matches this designation.

Speed ratings

Limiting Speed, oil/air lubrication: 16,500 rpm. Limiting Speed, grease lubrication: 10,200 rpm. Both are catalogue single-bearing figures under spring preload. Applying the catalogue back-to-back pair factor of 0.60 for medium preload gives 9,900 rpm oil/air and 6,120 rpm grease for this DB pair.

Preload and stiffness

Preload: Medium (M). Axial Preload, medium grade, paired: 930 N. Axial Stiffness, medium grade, paired: 152 N per micrometre. Effective Load Centre a: 24.7 mm. Lubricant: Oil or grease. Max Temp: 120°C. Min Temp: –30°C.

Cage and mounting geometry

Cage Type: Machined one-piece, outer-ring guided, designated by the TA element. Cage Material: Laminated phenolic resin. Ring and ball material: through-hardened carbon chrome bearing steel to BS970:534A99 / 535A99, equivalent to SAE 52100. Mounting Arrangement: Duplex, universally ground (DU) — back-to-back (DB), face-to-face (DF) or tandem (DT) at the ground medium preload with no shimming. Abutment diameter d1 min: 87 mm. Abutment diameter D1 max: 118 mm. Abutment diameter D2 max: 120 mm. Internal Volume: 36.4 cm3 per bearing. Pitch circle diameter of lubrication jets: 96.5 mm. The high point of radial runout is marked by a burnished spot on the inner ring face and a V line on the outer ring diameter, and the V line indicates the direction of the contact angle.

Designation, interchange and applications

Designation breakdown: B7016 dimension series 10 angular contact ball bearing, 80 mm bore; X2 15° contact angle; TA one-piece outer-ring-centred machined laminated phenolic cage; DU duplex universal face control; M medium preload; EP7 BS292 extra precision class 7, equal to ISO class 4 and ABEC 7. Interchange at 15°, class 4 and medium preload: FAG B7016-C-T-P4S-DUM, SKF 7016 CD/P4ADGC, NSK 7016CTRDUMP4. Search forms: B7016X2TADUMEP7, B7016X2 TADUM EP7, B7016X2TADUM, 7016X2 TA UM EP7, 7016C. Application Types: machine tool spindles, milling and turning centres, grinding spindles, precision gearboxes, rotary and indexing tables and test rigs.