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116865471599-0 - Northline Parts

R8 to MT1 MT2 MT3 MT4 Morse Taper Adapter Set | 7/16-20 Drawbar

SKU: NLT2D08094
$89.99 In Stock
$89.99
Sale price  $89.99 Regular price 
Ships for free in 2–4 business days.
This four-piece toolholder set adapts an R8 milling-machine spindle to MT1, MT2, MT3, and MT4 Morse taper tooling with a 7/16-20 drawbar connection.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • R8-spindle milling machines using a 7/16-20 drawbar
  • Compatible MT1 tooling
  • Compatible MT2 tooling
  • Compatible MT3 tooling
  • Compatible MT4 tooling

Product Overview

This set is for the machinist who already owns Morse taper drills, centers, or tooling and wants to run them from an R8 spindle without buying four separate holders. Each adapter provides the matching internal Morse taper while the R8 shank seats in the mill.

Confirm spindle, drawbar, tool tang, and machine-clearance requirements first. Morse taper tooling can vary between tang-drive and drawbar-retained designs, so the workholding plan still matters.

This is a high-quality aftermarket replacement or service part and is not manufactured or supplied by the original equipment brand. The names below identify compatible applications only.

Key Features & Performance

  • Four sizes cover MT1 through MT4 tooling
  • R8 shanks fit compatible milling-machine spindles
  • Hardened and precision-ground tool-steel construction
  • One organized set for changing between common Morse taper sizes

Common Uses

  • Running Morse taper drills or centers in an R8 mill
  • Equipping a home or repair shop with multiple taper sizes
  • Replacing mixed or damaged individual R8-to-Morse adapters

Technical Specifications

  • Set Size: 4 adapters
  • Machine Shank: R8
  • Tool Tapers: MT1, MT2, MT3, MT4
  • Drawbar Thread: 7/16-20
  • Material: Hardened tool steel
  • Finish: Precision ground

Installation & Fitment

  • Clean the R8 spindle and adapter shank before every use
  • Confirm the machine drawbar reaches and fully engages the adapter
  • Seat only clean, undamaged Morse taper tooling
  • Check runout and clearance before bringing a rotating tool to the workpiece

Compatibility Notice

Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Always verify the original part number, measurements, connections, and equipment configuration before purchase.

Frequently Asked Questions

Q: Does this set include MT1 through MT4? A: Yes. It contains one R8 adapter for each of the four listed Morse taper sizes.

Q: Will it fit an R8 machine with a different drawbar thread? A: The listed connection is 7/16-20; verify your machine before ordering.

Q: Can every tang-style Morse taper tool be retained the same way? A: No. Review the adapter depth and the tool's retention method before use.

Part Summary

keywords: R8 to MT1 adapter, R8 to MT2 holder, R8 to MT3 adapter, R8 to MT4 sleeve, Morse taper adapter set, 7/16-20 R8 tooling, milling machine taper adapters, four piece R8 holder set

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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