Lyndex-Nikken 850-032 R8 Taper Shell/Face Mill Holder, 1/2″ Pilot, Coolant-Through

Lyndex-Nikken 850-032 R8 Taper Shell/Face Mill Holder, 1/2″ Pilot, Coolant-Through

Condition: Appears new/unused with no original packaging; due to unknown history, treat as used for listing purposes. No other accessories/packaging included.

This Lyndex-Nikken Series 850 toolholder (marked 850-032) is an R8 taper shell/face mill holder designed to mount shell mills / face mills onto an R8 milling spindle (common on Bridgeport-style knee mills and R8-equipped machines). The rigid steel body, short projection, and pilot/drive arrangement help minimize tool deflection under heavy cuts. Many listings also note coolant-through capability (center feed), which is useful for chip evacuation and temperature control when your machine setup supports it.

Key Specifications (commonly published for 850-032-1.00 variants)

• Series: 850
• Machine-side taper: R8
• Cutter-side pilot (nose) diameter: 1/2 in (0.500″)
• Pilot length: 0.57 in
• Body diameter: 1.38 in
• Projection (gage length): commonly listed around 1.57 in
• Retaining / lock screw thread: 1/4″-28
• Coolant feed: Coolant-through / through-hole (application dependent)
• Runout (TIR): listings commonly cite 0.0002″ (check your unit/setup)
• Material: alloy steel / “molybdenum” steel is commonly cited for this series

Features

• R8 taper shank for Bridgeport-style spindles and other R8 machines
• Shell/face mill piloting for improved concentricity and support at the cutter
• Retaining screw interface (1/4″-28) to secure compatible shell/face mills
• Rigid, heavy-duty body aimed at high-load milling and facing operations
• Coolant-through design (center feed) for improved cooling and chip evacuation (when supported)
• Precision-ground contact surfaces to help maintain repeatable tool positioning

Applications

• General milling and facing in steel, aluminum, and other machinable alloys
• Slotting, surfacing, shoulder milling with shell mills/face mills sized for a 1/2″ pilot
• Job shops, toolrooms, maintenance machining, prototyping
• Education/training labs using R8 spindle vertical mills

Spheres of Application

• Metal fabrication and machining
• Industrial maintenance / MRO toolrooms
• Aerospace/automotive component machining (general-purpose tooling)
• Manufacturing cells using R8-capable mills (manual or CNC conversions)

Cross-Referenced Models

• Lyndex-Nikken: 850-032 (marking commonly shown on tool body)
• Lyndex-Nikken (catalog/retail format): 850-032-1.00
• Grainger cross reference: 38NV25 (commonly mapped to 850-032-1.00)

Comparable Products

• Techniks R8 shell/face mill holders (1/2″ pilot class)
• Maritool R8 shell mill holders (precision-ground toolholding)
• Kennametal / KMT shell mill arbors (matching pilot/screw spec)
• Haimer milling arbors (when using equivalent machine-side interfaces)
• Shars / Phase II economy R8 shell/face mill holders (budget alternatives)

Use as Part of a Larger System

This holder is one component in a typical milling tool stack:

• Machine spindle: R8 (drawbar retention)
• Toolholder: Lyndex-Nikken 850-032 shell/face mill holder
• Cutter: Shell mill / face mill with 1/2″ pilot and compatible retaining screw requirement
• Workholding: vise/fixture + parallels/clamps
• Optional: coolant or air blast for chip control

When selecting cutters, confirm:

• Center bore/pilot requirement matches 0.500″ pilot
• Retaining screw requirement matches 1/4″-28
• Clearance for body diameter (1.38″) and projection in your setup

Related

• R8 shell mill arbor, R8 face mill holder, 1/2 inch pilot arbor, 1/4-28 retaining screw toolholder
• coolant-through toolholder, through-hole milling arbor, Bridgeport R8 milling accessory
• shell mill adapter, face milling arbor, heavy-duty rigid milling holder, precision ground toolholding

Common Requests:

1. “Lyndex 850-032 R8 shell mill holder 1/2 pilot 1/4-28 screw”
2. “R8 face mill holder coolant through 0.500 pilot for Bridgeport”
3. “850-032-1.00 shell/face mill arbor projection 1.57 body dia 1.38”
4. “What cutters fit an R8 shell mill holder with 1/2 inch pilot?”
5. “Replace Grainger 38NV25 with Lyndex-Nikken equivalent toolholder”

Trademarks Disclaimer

Lyndex-Nikken and any other manufacturer names are trademarks of their respective owners. Any references are used only to identify compatibility and/or the originally associated product line; no affiliation or endorsement is implied.