SNR7006HG1DUJ84Angular Contact Ball Bearing – 30 mm ID, 55 mm OD, 13 mm Width, Open, 25°, Medium Preload, ABEC 7, Matched Pair

Product Description

What this part is:

SNR 7006HG1DUJ84 super-precision angular contact ball bearing, supplied as a universally ground duplex pair (Unit Quantity: 2 Pcs). Open, straight bore, single row per bearing, laminated phenolic cage. Bore 30 mm, outside diameter 55 mm, width 13 mm. Each bearing is rated individually; the pair is preloaded at the factory.

Decoding the designation:

7006 — ISO 70 series, 30 x 55 x 13 mm.

H — 25° contact angle.

G1 — laminated phenolic resin cage centred on the outer ring.

DU — pair of universally ground bearings with flush ring faces.

J84 — medium preload (8), ISO precision class 4 (4).

Specifications:

Bore Diameter: 30 mm. Outside Diameter: 55 mm. Overall Width: 13 mm. Contact Angle: 25°. Cage Material: Laminated phenolic resin. Cage Type: Machined, outer ring centred. Preload: Medium (J84), 90 lbf. Precision Class: ABEC 7 / ISO 4 / P4. Dynamic Load Rating: 15,930 N (3,580 lbf) per bearing. Static Load Rating: 11,210 N (2,520 lbf) per bearing. Limiting Speed: 22,000 rpm grease; 34,000 rpm oil, single bearing. Bearing Material: 52100 vacuum-degassed steel rings and balls. Lubricant: grease or oil. Country of Origin: France.

Dimensions and mounting:

Mounting Arrangement: Universal; the flush-ground faces allow back-to-back, face-to-face or tandem sets. Speed factor for a back-to-back pair at medium preload: 0.70, giving 15,400 rpm grease and 23,800 rpm oil. Speed factor for a face-to-face pair at medium preload: 0.65, giving 14,300 rpm grease and 22,100 rpm oil. Harmonization Code: 8482.10.50.28.

Compatibility and replacement:

Cross-references: SKF 7006 ACD/P4ADGB, FAG B7006-E-T-P4S-DUM, RHP 7006A5TRDUMP4, Fafnir 3MM9106WICRDUM. Each is a 25°, medium-preload, universally matchable pair on the same 30 x 55 x 13 mm envelope. Searchable forms of the number: 7006 H G1 DU J84, 7006-H-G1-DU-J84, 7006HG1DU J84.

Frequently asked questions:

What contact angle does the SNR 7006HG1DUJ84 have?

25°; H is SNR’s code for 25°.

What preload and precision class does J84 indicate?

The 8 is medium preload (90 lbf) and the 4 is ISO precision class 4, equivalent to ABEC 7.

What are the load ratings and limiting speeds?

Per bearing, dynamic load rating 15,930 N and static load rating 11,210 N; limiting speed 22,000 rpm on grease and 34,000 rpm on oil (single bearing). Source: SNR High Precision Bearings for Machine Tool Spindles catalogue.