SNR7008HG1DUJ84Angular Contact Ball Bearing – 40 mm ID, 68 mm OD, 15 mm Width, Open, 25°, Medium Preload, ABEC 7, Matched Pair

Product Description

What this part is

SNR 7008HG1DUJ84 super-precision angular contact ball bearing, supplied as a universally matchable duplex pair. Brand: SNR (NTN-SNR). Part Number: 7008HG1DUJ84. Bearing Type: Spindle Angular Contact Ball Bearing. Series: 7000. Base Number: 7008. Bore: 40 mm. Outside Diameter: 68 mm. Overall Width: 15 mm. Bore Type: Straight. Number Of Rows: 1. Rolling Elements: Ball. Material: Bearing steel. Closure Type: Open. Design Units: Metric. Country of Origin: France. Searchable forms of the number: 7008 H G1 DU J84, 7008-H-G1-DU-J84, 7008HG1DU J84.

Decoding the designation

Contact Angle: 25°. Cage Material: Laminated phenolic resin. Cage Type: Machined, centred on the outer ring. Preload: Medium. Precision Class: ISO Class 4, equivalent to ABEC 7 and DIN P4. Internal Clearance: N/A, because the pair is set to a defined preload rather than to a running clearance. Mounting Arrangement: Universal — the rings are flush ground, so the pair can be set back-to-back, face-to-face or in tandem.

What these specs mean in practice

A 25° contact angle carries more thrust and less speed than a 15° execution, which suits machine-tool spindles and screw drives where axial load dominates. Medium preload holds the balls in defined contact at all times, giving higher axial and radial stiffness and tighter shaft location than a light-preload set. The laminated phenolic cage is light and quiet and tolerates marginal lubrication; centring it on the outer ring keeps it stable at speed. ISO Class 4 tolerance gives closer runout and lower running vibration than Class 5. Item weight: 0.42 lb.

Quantity and configuration

Unit Quantity: 2 Pcs. This is a factory-matched, universally ground pair with the preload built in at the factory.

Interchange guidance

Cross-references carried on the carton: SKF 7008 ACD/P4ADGB, FAG 7008E-T-DUM-P4, RHP 7008A5TYNDUMP4, Fafnir 3MM9108WI-DUM. Each is a 25°, medium-preload, universally matchable pair on the same 40 x 68 x 15 mm envelope. Harmonization Code: 8482.10.50.