FAG234417MSPDouble Direction Axial Angular Contact Thrust Ball Bearing – 85 mm ID, 130 mm OD, 54 mm Width, Open, 60° Contact Angle, Machined Brass Cage, SP Tolerance

Product Description

What this part is

FAG 234417M.SP axial angular contact ball bearing. Series 2344, double direction, separable, restricted tolerances. 85 mm bore x 130 mm outside diameter x 54 mm total width, with an outer ring width of 27 mm. Open. Carton designations: 234417M.SP, 234417-M-SP, 234417M SP, 234417.

Decoding the designation

Series: 2344, Schaeffler’s ball screw support range. Contact Angle: 60°. Cage Type: machined. Cage Material: brass. Tolerance Class: SP, restricted tolerances. The 2344 series takes axial load in both directions from a single bearing position.

What these specs mean in practice

A 60° contact angle puts almost all of the load path along the shaft axis, which is what makes this the standard bearing at the fixed end of a machine tool ball screw. Basic dynamic load rating, axial: 57,000 N. Basic static load rating, axial: 179,000 N. Fatigue load limit, axial: 15,900 N. Axial rigidity: 655 N/µm. Preload force: 400 N. Lift-off force: 1,140 N. Limiting speed with grease: 4,500 rpm. Limiting speed with oil: 6,000 rpm. Operating range: -30 °C to 150 °C. Weight: 2.239 kg (4.94 lb). The high static figure relative to the dynamic figure is characteristic of a 60° double-direction thrust type: the steep angle gives a very large static capacity against shock and holding loads.

Quantity and configuration

One complete bearing. Series 2344 is separable and supplied as a matched component set: a shaft washer between two housing washers, each with its own ball and cage assembly. The two 27 mm outer rings make up the 54 mm total width. All components ship together and are matched to each other.

Fitting notes

Straight cylindrical bore. Shaft shoulder diameter: 103.5 mm to h12. Outer ring shoulder diameter: 122 mm to H12. Shaft washer rib diameter: 115 mm. Wave disc height: 13.5 mm. Minimum chamfer dimensions: 1.1 mm and 0.3 mm. Maximum recess radii: 1.1 mm and 0.3 mm. Lubrication hole diameter: 4.8 mm. Lubrication groove width: 9.5 mm. Distance between the apexes of the pressure cones: 216.5 mm. Preload is built into the matched set, so this bearing carries no radial internal clearance class.

Interchange guidance

Same-family equivalents in this envelope: SKF 234417 BM1/SP, NSK 85TAC130B. The current Schaeffler designation for this part is 234417-M-SP, which replaces the legacy dot form 234417M.SP.