BLUEFOX Lathe Alignment Test Bar 272mm (10-3/4") Parallel Shank Mandrel Wooden Box | ‎Diameter 30mm | Accuracy within 2 Micron | Hardened And Ground

This Lathe Alignment Test Bar / Parallel Shank Mandrel (272mm / 10-3/4") is a professional-grade precision tool used for accurate alignment of the tailstock with the headstock on engine lathes, bench lathes, and toolroom lathes. It is an essential accessory for machinists, toolmakers, and maintenance engineers who demand true concentricity, straight turning, and repeatable machining accuracy.

Manufactured from high-quality EN31 alloy steel, the test bar is fully hardened and precision ground to achieve excellent straightness, roundness, and surface finish. The hardened structure ensures wear resistance, dimensional stability, and long service life, even under frequent workshop use.

The parallel shank mandrel design allows smooth and accurate mounting in the spindle, chuck, or collet, providing a reliable reference for checking spindle alignment, tailstock offset, taper errors, and machine geometry. When used with a dial indicator, this test bar helps eliminate taper issues and improves overall turning accuracy.

Supplied in a robust wooden storage box, the test bar is well protected from dust, moisture, and accidental damage, making it ideal for professional workshops, toolrooms, training institutes, and industrial maintenance applications.

Key Features & Technical Specifications:

• Overall Length: 272mm / 10-3/4 inches

• Type: Lathe Alignment Test Bar / Parallel Shank Mandrel

• Material: EN31 alloy steel

• Heat Treatment: Fully hardened for durability

• Finish: Precision ground for high accuracy

• Design: Parallel shank for stable and repeatable alignment

• Accuracy: High concentricity and straightness

• Storage: Supplied in protective wooden box

Applications & Uses:

• Accurate tailstock to headstock alignment

• Checking lathe spindle runout and straightness

• Diagnosing and correcting taper turning issues

• Machine setup, calibration, and preventive maintenance

• Toolroom, workshop, and training applications

Benefits for Machinists:

• Improves turning accuracy and surface finish

• Reduces machining errors and part rejection

• Helps maintain lathe geometry and precision

• Long-lasting hardened construction for repeated use