What are the dimensions of this SKF ball bearing?

The bearing has a 45 mm bore diameter, a 100 mm outside diameter, and a 39.7 mm width.

What loads can this angular contact bearing handle?

With a 30° contact angle and two rows, it accommodates combined radial loads and axial loads in both directions.

What material is the bearing cage made of?

This model (TN9 designation) features a glass-fibre reinforced polyamide (plastic) cage.

Is this SKF bearing sealed?

No, this is an open bearing configuration supplied without integrated seals.

What internal clearance does this bearing have?

This bearing has normal axial internal clearance (CN).

SKF 3309 ATN9 double-row angular contact ball bearing 45 x 100 x 39.7 mm with 30° contact angle

Supplier number: SKF 3309 ATN9 | EAN 7316570953695

Recommended Retail Price €379.76

187.95 tax incl.

€155.33 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered tomorrow 15/10/2026
Free shipping
Delivery by DHL
Delivered from Belgium

↓ Documents (1) ✆ Talk to a specialist

Reliable load handling with Skf 3309 ATN9

Practical benefits

Dual directional load support: You can support heavy radial loads and axial forces in both directions simultaneously thanks to the two-row design with a 30° contact angle.
Smooth high-speed running performance: The lightweight polyamide cage minimizes friction and vibration, allowing you to achieve high rotational speeds in demanding machinery.
Compact and rigid arrangement: You save axial mounting space compared to paired single-row bearings while maintaining an exceptionally rigid shaft setup.

In a nutshell

The right choise for

With the Skf 3309 ATN9 double row angular contact ball bearing, you achieve a rigid and reliable shaft arrangement in demanding machinery. Featuring a 30° contact angle and two ball rows, it accommodates heavy radial loads alongside bidirectional axial forces simultaneously. This compact design saves valuable axial mounting space compared to paired single-row bearings. The lightweight glass-fibre reinforced polyamide cage minimizes friction and vibration, supporting smooth performance at high rotational speeds. This open bearing with normal internal clearance (CN) is built for pumps, gearboxes, and industrial drive systems.

Product information FAQ

€187.95

In stock - tax incl.

Key features according to our expert

Inner diameter: 45 mm
Width: 39,7 mm
Number of rows: 2
Axial clearance: CN (Normal)
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Material (cage): Plastic
Outer diameter: 100 mm

Product description

Double row angular contact ball bearings correspond, in their design and operation, to a pair of single row angular contact ball bearings in a back-to-back arrangement, while requiring less axial space. They can operate at high speeds and are more suitable than deep groove ball bearings for supporting large axial forces in both directions.

High-speed capability
Accommodate relatively high radial loads, high axial loads in both directions and tilting moments
Suitable where a stiff bearing arrangement is required
Require less axial space than equivalent pair of single row angular contact ball bearings

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 45 mm
Width: 39,7 mm
Number of rows: 2
Axial clearance: CN (Normal)
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Material (cage): Plastic
Outer diameter: 100 mm
Matched arrangement: No
Locating feature, bearing outer ring: None
Ring type: One-piece inner and outer rings
Contact type: Normal contact (two-point contact)
Basic static load rating: 53
Lubricant: None
Relubrication feature: Without
Reference speed: 7500
Skf performance class: SKF Explorer
Arrangement of contact angle (double-row bearing): Back-to-back (O)
Cage: Non-metallic
Material, bearing: Bearing steel
Sealing: Without
Bore diameter: 45
Axial internal clearance: CN
Contact angle: 30
Limiting speed: 6700
Basic dynamic load rating: 75
Coating: Without
Outer diameter: 100
Universal matching bearing: No

Brand SKF
01050899
EAN 7316570953695
Supplier number SKF 3309 ATN9

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this SKF ball bearing?: The bearing has a 45 mm bore diameter, a 100 mm outside diameter, and a 39.7 mm width.
What loads can this angular contact bearing handle?: With a 30° contact angle and two rows, it accommodates combined radial loads and axial loads in both directions.
What material is the bearing cage made of?: This model (TN9 designation) features a glass-fibre reinforced polyamide (plastic) cage.
Is this SKF bearing sealed?: No, this is an open bearing configuration supplied without integrated seals.
What internal clearance does this bearing have?: This bearing has normal axial internal clearance (CN).