Aloris DA-55 Morse Taper Tool Post Holder 5MT Series Da

Product Description

The ALORIS DA-55 is a Morse taper tool post holder designed for use with Series DA quick-change tool post systems on engine lathes. This holder accepts a No. 5 Morse taper (5MT) shank, allowing machinists to mount drill chucks, live centers, reamers, and other MT-shanked tooling directly in the tool post without moving to the tailstock. The overall height is 3.25 inches, with a centerline height of 1.625 inches, placing the tool centerline at a consistent, repeatable height. The unit does not include through-coolant capability. At 12.75 pounds, this is a solid, production-grade holder suited for high-repetition turning operations.

This holder is rated for lathes with a swing range of 17 to 48 inches, covering a wide range of engine lathe sizes from mid-size manual lathes up to large-capacity machines. It is part of the ALORIS DA Series quick-change system and mounts directly to any compatible DA-series tool post. Typical users include manual machinists, tool room operators, and production turning shops that run MT-shank tooling regularly on engine lathes. The holder eliminates repeated tailstock setup when MT tooling is needed inline with the spindle centerline.

Key Features

• Accepts No. 5 Morse Taper (5MT) shank tooling directly in the tool post
• Compatible with lathes in the 17 to 48 inch swing range
• Overall height of 3.25 inches with a 1.625 inch centerline height for consistent tool alignment
• Part of the ALORIS DA Series quick-change tool post system for repeatable, fast holder changes
• No through-coolant port - dry or flood coolant from external nozzle only
• Solid construction at 12.75 pounds for stability under cutting loads

Compatibility

Designed for use with the ALORIS DA Series quick-change tool post system on engine lathes with a swing range of 17 to 48 inches.

Installation Notes

Installation is performed by a machinist or toolroom technician. Before mounting or removing any tool post holder, disengage the lathe spindle and confirm the machine is fully powered down. Seat the 5MT shank fully and verify it is locked before starting the spindle. Follow the machine manufacturer's guidelines for tool post torque and holder seating to prevent movement under cutting loads.