TSC Rotary Coolant Union for Haas Vertical Mills – Replaces PN# 93-9082 & 93-1158

TSC Rotary Coolant Union for Haas® Vertical Mills

Direct Replacement for Haas® PN# 93-9082 & 93-1158

Keep your Haas® Vertical Machining Center running at peak performance with our premium TSC Rotary Coolant Union. This is the critical component that interfaces high-pressure coolant to the center of the spindle motor for Through-Spindle Coolant (TSC) delivery — enabling coolant to flow directly through the cutting tool for deep-hole drilling, blind-pocket milling, and high-speed machining operations.

Whether you are completing a 3-spindle coolant retrofit on an older Haas® VMC or replacing a worn, noisy, or leaking union on a machine already equipped with TSC, this part is your direct, cost-effective solution.

Part Number Cross-Reference

⚠️ Important Notice: This unit does NOT replace the gold-colored bearingless rotary unions (Haas® PN# 93-2128A). Please verify fitment with us or your local Haas® Factory Outlet (HFO) before ordering.

Why Buy From Us Instead of OEM?

Haas® lists this union at $3,990.00 less core credit — meaning you still pay a premium and must return your old part. We offer this brand-new, high-quality unit at just $1,079.00 outright with no core charge required. That's a significant savings that goes straight back into your shop's bottom line.

Technical Specifications

Key Features

• Single-passage design for coolant or MQL — no obstructions to trap swarf or debris
• Integrated safety valve allows unlimited dry running without media pressure, protecting the union during tool changes
• Sealed bearing housing protects dual angular contact ball bearings from contamination
• Silicon carbide mechanical seals provide long service life even under demanding conditions
• Direct-fit rotor for installation on compatible Haas® drawbars — no modifications required
• Tested for fit and function on Haas® Machining Centers

Compatible Applications

This TSC rotary union is designed for use with Haas® Vertical Machining Centers (VMCs) equipped with a 40-taper inline spindle and a bearing-style TSC union. Common compatible machine families include:

• Haas® VF Series (VF-1, VF-2, VF-3, VF-4, VF-5, etc.)
• Haas® VM Series
• Other Haas® VMCs with 40-taper inline spindles using a bearing-style TSC union

Always confirm your machine's spindle type and existing union style before ordering. This part is for bearing-style unions only and does NOT fit machines using the bearingless (gold-colored) union PN# 93-2128A.

Ideal For: Haas 3-Spindle Coolant Retrofits

Adding Through-Spindle Coolant to a Haas® VMC that was not originally equipped with TSC requires several key components — and the rotary coolant union is the heart of the system. This union mounts directly to the drawbar and allows high-pressure coolant to pass through the rotating spindle to the cutting tool, enabling:

• Deep-hole drilling in a single pass (eliminating peck cycles)
• Higher spindle speeds and feed rates
• Superior chip evacuation and tool life
• Better surface finishes on deep-pocket milling operations

If you are sourcing parts for a TSC retrofit, contact our team — our parts specialists can help you identify every component you need to complete the job.

Shipping & Support

• ✔ Same-day shipping available — machine down? Call us and we will get it out the door today.
• ✔ Parts specialists on standby to assist with fitment questions, retrofit guidance, and additional Haas® CNC parts.
• ✔ Contiguous U.S. shipping only.

Disclaimer: This part is not manufactured by or affiliated with Haas Automation, Inc. Haas® and all related trademarks are the property of Haas Automation, Inc. Part numbers are referenced for cross-reference and fitment purposes only.