INDUSTRY COMPONENT

Tailstock

A tailstock is a movable component on a CNC turning center that supports the workpiece opposite the spindle, providing stability and alignment during machining operations.

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Component Specifications

Definition
The tailstock is a critical component of an Aluminum CNC Turning Center, designed to support the free end of a workpiece during turning operations. It consists of a base that slides along the machine bed, a quill that extends and retracts, and a center (live or dead) that contacts the workpiece. Its primary functions include preventing deflection under cutting forces, maintaining concentricity, and enabling the machining of long or slender workpieces. In aluminum machining, it ensures dimensional accuracy and surface finish by minimizing vibration and chatter.
Working Principle
The tailstock operates by sliding along the machine bed to position itself opposite the spindle. Once aligned, the quill is advanced manually or via hydraulic/pneumatic pressure to bring the center into contact with the workpiece, applying controlled force to support it. During operation, it remains stationary relative to the rotating workpiece, counteracting radial and axial forces generated by cutting tools. In live tailstocks, the center rotates with the workpiece to reduce friction and heat generation.
Materials
Typically constructed from high-strength cast iron or ductile iron for the base and body, with hardened and ground steel for the quill and center. Critical wear surfaces may be coated with materials like chromium or nitride for durability. Components in contact with aluminum workpieces often use materials resistant to galling, such as bronze bushings or coated steels.
Technical Parameters
ParameterTypical rangeNotes & selection driver
TaperMT4, MT5, or ISO tapers
Weight50-300 kg
ActuationManual, hydraulic, or pneumatic
Quill Travel100-300 mm
Center HeightMatches machine center height (e.g., 200-500 mm)
Repeatability±0.01 mm
Maximum Thrust2-10 kN
Quill Diameter80-150 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 230-1, DIN 55027

Parent Products

This component is used in the following industrial products

Aluminum CNC Turning Center

A computer numerical control (CNC) turning machine specifically engineered for aluminum machining operations.

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Universal CNC Lathe

A computer-controlled machine tool for precision turning operations on cylindrical workpieces.

View Product Details

Economic CNC Lathe

A cost-effective computer numerical control lathe designed for precision turning operations in small to medium-scale manufacturing.

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Engineering Analysis

Risks & Mitigation
  • Misalignment causing taper or runout
  • Insufficient clamping force leading to workpiece slippage
  • Wear of the center or quill affecting accuracy
  • Contamination from chips or coolant reducing performance
FMEA Triads
Trigger: Improper alignment with spindle
Failure: Workpiece taper or dimensional inaccuracy
Mitigation: Regular alignment checks using test bars and dial indicators; adjust tailstock position as per machine manual.
Trigger: Worn or damaged center
Failure: Poor surface finish or workpiece damage
Mitigation: Inspect and replace centers periodically; use live centers for high-speed operations to reduce wear.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Alignment within 0.02 mm over 300 mm travel; quill runout less than 0.01 mm
Test Method
ASME B5.54 for geometric accuracy; use of dial indicators and test bars to measure alignment and repeatability.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Tailstock

Manufacturer profiles associated with Tailstock.

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the difference between a live and dead tailstock center?

A live center rotates with the workpiece, reducing friction and heat, ideal for high-speed aluminum machining. A dead center is stationary, requiring lubrication and used for heavy-duty applications but can generate more heat.

How do you maintain a tailstock on a CNC turning center?

Regularly clean and lubricate the quill and sliding surfaces, check alignment with the spindle, inspect the center for wear, and ensure hydraulic/pneumatic systems are leak-free to maintain precision and prevent workpiece damage.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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