Value Collection UNK-80 Live Center Taper Shank MT4

Product Description

The VALUE COLLECTION UNK-80 is a Morse Taper 4 (MT4) live center designed for use in the tailstock of a lathe during turning operations. The triple-bearing design supports rotating workpieces while maintaining accurate alignment and reducing friction at the point of contact. With a maximum workpiece capacity of 1,322.8 pounds and a maximum spindle speed of 3,000 RPM, this unit is built for demanding production and toolroom turning. The standard 60-degree included-angle point is compatible with center-drilled workpieces. The center body is steel construction. Installation and setup are performed by machinists and tool-room technicians.

The UNK-80 is suited for general-purpose turning applications where a rotating live center is required to support the workpiece at the tailstock end. The MT4 shank fits standard MT4 tailstock bores found on mid-size to larger engine lathes. The 1,322.8-pound workpiece weight rating makes it appropriate for heavier stock turning in production machining, maintenance repair shops, and toolroom environments. The standard point style accommodates center-drilled workpieces across a wide range of shaft and cylindrical part diameters.

Key Features

• MT4 taper shank fits standard MT4 tailstock bores on mid-size and larger engine lathes
• Triple-bearing design supports high radial and axial loads up to 1,322.8 pounds workpiece capacity
• 3,000 RPM maximum speed rating for production turning operations
• Standard 60-degree included-angle point accommodates center-drilled workpieces
• Steel construction for durability in machine shop environments
• Non-carbide-tipped standard point suitable for general-purpose use

Compatibility

Designed as a direct-fit replacement or upgrade live center for engine lathes equipped with an MT4 tailstock bore.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Before installing or removing the center, ensure the lathe is fully powered down and the spindle is at rest. Clean the MT4 tailstock bore and shank taper thoroughly before seating to ensure proper contact and alignment. Use a suitable drift punch and soft mallet to eject the center from the tailstock bore when removal is required — never apply side force to the point or rotating head during removal.