NSK17TAC47DFC10NES7AAngular Contact Thrust Ball Bearing for Ball Screw Support – 17 mm ID, 47 mm OD, Straight Bore, Open, Face-to-Face Matched Pair.

Product Description

What this part is

NSK 17TAC47DFC10NES7A, an angular contact thrust ball bearing for ball screw support. Bore Diameter: 17 mm (0.6693 in). Outside Diameter: 47 mm (1.8504 in). Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open. Bearing Material: Bearing steel. Series: TAC.

Decoding the designation

17TAC47 — NSK’s ball screw support angular contact thrust series. The leading number is the bore in millimetres and the number following TAC is the outside diameter in millimetres, so 17TAC47 is a 17 mm bore in a 47 mm outside diameter.

DF — face-to-face pair. Two single-row bearings supplied as a matched set and mounted with their outer ring faces together.

What these specs mean in practice

Ball screw support bearings carry thrust along the screw axis and hold the screw in axial position under reversing load. The 17 mm bore seats on the screw journal and the 47 mm outside diameter locates in the support housing bore. A face-to-face pair sets the load lines converging inward, which gives a shorter effective bearing span and tolerates a small amount of shaft misalignment.

Quantity and configuration

Unit Quantity: 2 Pcs. Mounting Arrangement: Face-to-face (DF) matched pair.