SKF4215-ATN9Double Row Deep Groove Ball Bearing — 75 mm ID, 130 mm OD, 31 mm Width, Open, Glass-Fibre Polyamide Cage, CN Clearance

Product Description

What this part is

SKF 4215 ATN9, a double-row deep groove ball bearing. Bore: 75 mm. Outside Diameter: 130 mm. Overall Width: 31 mm. Number Of Rows: 2. Rolling Elements: steel balls. Closure Type: open both faces. Cage Material: glass-fibre reinforced polyamide 6,6. Cage Type: injection-moulded snap-type, ball-guided. Internal Clearance: CN. Dynamic Load Rating: 72.8 kN. Static Load Rating: 80 kN. Fatigue Load Limit: 3.35 kN. Reference Speed: 7,500 r/min. Limiting Speed: 4,000 r/min. Mass: 1.6 kg. GTIN: 7316577004512.

Decoding the designation

42 — SKF’s double-row deep groove series, two ball rows in a single pair of rings on the 02 light dimension section.

15 — the bore code, 15 x 5 = 75 mm.

A — Conrad-assembled rows, so both raceway shoulders are full height and the bearing carries thrust equally in both directions.

TN9 — injection-moulded glass-fibre reinforced polyamide 6,6 snap cage.

What these specs mean in practice

Dynamic Load Rating: 72.8 kN. Static Load Rating: 80 kN. The static figure sitting above the dynamic figure is the published relationship for this family: two rows of balls put twice the contact area under a stationary load, which lifts the permissible static load without a matching lift in the fatigue-life rating. Fatigue Load Limit: 3.35 kN. Reference Speed: 7,500 r/min. Limiting Speed: 4,000 r/min — the reference speed is the thermally permitted figure and the limiting speed is the mechanical ceiling set by the cage and lubricant, so 4,000 r/min is the number to design to. Two rows in one pair of rings take the same radial load and both-direction thrust that a paired single-row set would, in a single housing bore and with a single fit to control. Internal Clearance: CN, the normal group. Cage Material: glass-fibre reinforced polyamide 6,6, which runs quieter and lighter than a pressed steel cage and tolerates shock and acceleration well. Mass: 1.6 kg.

Mounting data

Bore: 75 mm, cylindrical. Outside Diameter: 130 mm. Overall Width: 31 mm. Inner ring raceway diameter d1: 96.9 mm. Outer ring raceway diameter D1: 113.1 mm. Bearing chamfer r1,2 min: 1.5 mm. Shaft abutment diameter da min: 84 mm. Housing abutment diameter Da max: 121 mm. Abutment fillet radius ra max: 1.5 mm.

Quantity and configuration

Unit Quantity: 1 Pc. One bearing carries both ball rows.

Interchange guidance

Manufacturer part number variants: 4215 ATN9, 4215ATN9, 4215-ATN9, 4215. The 4215 envelope is an ISO-standard double-row deep groove size, so an NKE 4215-B-TV, FAG 4215-B-TVH and NSK 4215 share the 75 x 130 x 31 mm boundary dimensions. A 22215 spherical roller bearing shares the same envelope but is a self-aligning roller type with a different load and misalignment profile, so it is a related size rather than an interchange.