Why Through-Spindle Coolant (TSC)?

• The Through-Spindle Coolant (TSC) option adds value to the Haas VMC or HMC by increasing the performance of the machine, and delivering coolant where it is needed. 
• High-pressure Through-Spindle Coolant is essential for deep-hole drilling and deep-pocketing operations, keeping the tools lubricated and free of chips. 
• With the Through-Spindle Coolant option, productivity can be increased by altering current programs with faster feedrates, and by optimizing drilling operations, leading to cycle-time reduction and higher quality parts. 

• Smaller coolant passages in the tool restrict the flow of coolant, causing the pressure to increase 
• The maximum allowable rpm with through-spindle coolant  is 15,000 rpm
• A tool with a through-hole of 0.22" (5.6 mm) or larger allows more coolant to pass through, resulting in lower pressure at the cutting edge of the tool 

• The actual pressure delivered to the cutting edge depends on the size of the coolant passages in the tool
• Smaller coolant passages restrict the flow, causing the pressure to increase
• Larger coolant passages in the tool allow more fluid to pass through, resulting in lower pressure at the cutting edge
• The highest pressure occurs at the lowest flow rate (smallest holes)

• Increases tool life by clearing chips during deep-hole drilling and blind-pocket milling 
• Allows higher cutting speeds for cycle time reduction, and avoids re-cutting of chips
• Provides better surface finishes
• With through-spindle coolant and the correct tooling, you can drill holes to depth in a single pass
• Yields significant time savings, compared to peck drilling 

Drilling Comparison: 6 holes at 2.0" (51 mm) depth*

High-speed steel drill, peck drilling with flood coolant: 
• 1⁄2" high-speed steel (HSS) drill
• Spindle speed: 3820 rpm
• Feedrate: 62 ipm
• Peck depth: 0.25" 
• Cycle time: 44 sec

Carbide drill, single-shot drilling with through-spindle coolant: 
• 1⁄2" carbide drill
• Spindle speed: 15,000 rpm 
• Feedrate: 180 ipm
• Single shot
• Cycle time: 20 sec

Note: Spot drill operations are only needed when working with HSS tooling. With carbide drills and TSC, no spot drill operation is needed. This reduces cycle times and increases productivity.

*Comparison does not include a spot drill operation.

Part cycle time without through-spindle coolant = 5 min 30 sec
Part cycle time with through-spindle coolant enabled = 4 min
Difference: 1 minute 30 seconds 

Parts per hour without through-spindle coolant: 11
Parts per hour with through-spindle coolant: 14 = 27% faster

DO THE MATH

• Shop rate: $60/hour
• Machine ON time: 40 hours/week
• 40 hours X 27% = 10.8 hours/week saved X $60 shop rate = $648 savings/week
• Payback time: 3 months

* Carbide tooling with TSC capability is required to take full advantage of the option 

TSC PRESSURE RELEASE – HAAS AUTOMATION SERVICE TIP

NOTE: These instructional videos show procedures that should be performed only by trained service technicians. If you don’t have the proper training you could injure yourself or damage your machine. In this episode, service engineer Brian Dickenson explains why sometimes there is a delay between tool changes after using TSC, and provides a simple way to eliminate these delays.

THROUGH-SPINDLE COOLANT (TSC) FOR HAAS MILLING MACHINES – HAAS AUTOMATION

Haas has two Through-Spindle Coolant systems: a 300 psi (21 bar) and a 1000 psi (69 bar) system. These reliable systems supply high-pressure coolant that flows through the cutting tool, allowing for heavier cuts, higher feedrates, deep-hole drilling, and better surface finishes. With Through-Spindle Coolant, you’ll reduce your cycle times, increase throughput, and produce higher-quality parts. To minimize clogging, the Haas TSC pump includes an innovative self-cleaning feature.

THROUGH-SPINDLE COOLANT – HAAS HOW IT WORKS

In this episode of our How It Works series, Mechanical Engineer Katherine White describes how Haas through-spindle coolant (TSC) systems work, explains the benefits of using TSC, and demonstrates the proper applications for both 300 psi (21 bar) and 1000 psi (69 bar).

THE ADVANTAGES OF THROUGH-SPINDLE COOLANT

In this video, Scott and Matt demonstrate some of the advantages of the Haas TSC system by comparing traditional flood coolant and through-spindle coolant on the same drilling application.