2–3 weeks · to order
INA · originál
The ZARN 2557 TN is an INA combined axial-radial roller bearing designed as a complete fixed support for the end of a ball screw in a single compact unit. Its design combines a double-row axial roller bearing with a radial needle bearing, taking radial and bidirectional axial loads at one location simultaneously.
This architecture replaces two separate bearings, saves installation space and simplifies mounting into the housing. The polyamide cage (TN) ensures quiet running, low friction and stable behaviour even at higher speeds.
Supplied as standard in precision class P5.
The ZARN 2557 TN INA is used as the fixed end of a ball screw in CNC machines where installation dimensions must be minimised. Its advantage is an integrated solution for both radial and axial guidance in a single bearing — eliminating the need for a separate radial bearing and simplifying the support design.
One and the same machine can use three different bearings across its generations. That's why, before ordering, we verify the machine, the year of manufacture and the pair arrangement. What we'll need from you →
Send the type, year of manufacture and a photo of the nameplate — we'll verify the variant and send a quote, usually within 24 hours.
