All Industrial 52050 | Coaxial Centering Indicator Co-Ax Precision Milling Machine Test Dial CNC

Description

The All Industrial 52050 coaxial centering indicator is a precision tool made for fast, accurate centering in milling and boring operations. This coaxial centering dial test indicator enables centering on both horizontal and vertical machines without changing the face position. Operators change only the feeler to switch between internal and external measurements while the face remains fixed during spindle rotation. The instrument’s compact 5-1/2" body and 3/8" shank fit standard holders for simple mounting on milling machines and boring bars. A 1/8" feller ball and supplied straight and curved feelers provide flexible contact geometry for varied bores and external diameters. Capacity covers internal 5/32" to 4-1/4" diameters and external 0 to 4-1/4" diameters for common centering tasks. Locating accuracy of 0.0005" gives true-center results suitable for precision setup and finishing operations on CNC mill spindles. The indicator supports spindle rotation up to 800 RPM while the face remains stationary, leaving both hands free for table positioning. Included accessories such as the restraining rod and center point feeler simplify setup and reduce trial-and-error alignment time. Weighing 1.6 lbs, the All-Industrial 52050 is portable yet robust enough for shop-floor and toolroom duties. Quick centering capability reduces fixture setup time and improves throughput for batch boring and multi-fixture work. Its construction and feeler options make the coaxial dial indicator suitable for both internal bore alignment and external runout checks. Technicians will appreciate the straightforward feeler changes and the positive tactile feedback when the true center is reached. Routine maintenance is simple: clean contact points, protect the face, and verify zero against a certified reference. Select the All Industrial 52050 coaxial centering indicator to speed alignments and improve centering repeatability on milling machines.

Product Features and Benefits

Hands-Free Stationary Face Design

The coaxial centering dial test indicator keeps the face stationary while the spindle rotates, allowing the operator both hands free for table adjustments.

Internal & External Capacity

The coaxial dial indicator measures internal 5/32" to 4-1/4" dia. and external 0 to 4-1/4" dia. for versatile milling and boring applications.

True-Center Locating Accuracy

Precision locating to 0.0005" delivers reliable true center results for setup and finishing tasks on CNC mills and manual machines.

Comprehensive Feeler Kit

Includes a center point, straight (2", 4", 6"), and curved feelers, plus a restraining rod to handle a variety of bore and external geometries.

Operates up to 800 RPM

Made to function while the spindle rotates up to 800 RPM, enabling rapid centering checks without stopping the spindle.

Frequently Asked Questions

How to use a coaxial indicator for centering a bore?

Mount the All Industrial 52050, fit an internal feeler, run the spindle slowly, and adjust the table until the dial indicates true center within 0.0005".

What is the locating accuracy of the All Industrial 52050?

The coaxial centering indicator delivers a locating accuracy of approximately 0.0005" for true-center confirmation.

Can the coaxial indicator be used on a CNC mill?

Yes, the All Industrial 52050 is suitable for dial indicators for CNC mill setups and can be used during spindle rotation up to 800 RPM.

How do I switch between internal and external measurements?

Change to the appropriate feeler (internal or curved external) and re-index the indicator; the face remains fixed for consistent readings.

What accessories are included with the coaxial centering indicator?

The kit includes a restraining rod, a center point feeler, and 2", 4", and 6" straight and curved feelers for flexible centering tasks.

Warning:

This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.

For more information, visit www.P65Warnings.ca.gov

Warning:

This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.

For more information, visit www.P65Warnings.ca.gov