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Heavy Duty Precision Live Center | CNC Lathe Tailstock Center


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Maximize your lathe's turning capabilities and support heavy workpieces with our Heavy Duty Precision Live Centers. Manufactured by Pingyuan Zhenghao Machinery, these robust tailstock centers are engineered for high-speed CNC turning and heavy metal removal operations. Featuring a premium triple-bearing assembly (including deep groove ball bearings, thrust bearings, and needle roller bearings), our live centers easily absorb extreme radial and axial loads while maintaining an ultra-low runout of ≤ 0.005mm (0.0002"). Forged from high-alloy steel and hardened for maximum wear resistance, they deliver unparalleled stability and precision at unbeatable factory-direct prices.

Product Description

Light-Duty Precision Live Center

A live center is constructed so that the 60° center runs in its own bearings and is used at the non-driven or tailstock end of a

machine. It allows higher turning speeds without the need for separate lubrication, and also greater clamping pressures. CNC

lathes use this type of center almost exclusively and they may be used for general machining operations as well.

live center M11

Order No.	MS.NO.	L (mm)	D (mm)	L1 (mm)	d (mm)	D1(mm)	Max.Load (kg)	Max.Speed (rpm)	Accuracy (mm)
M11/101	MS1	124	36	27	15	12.065	80	7000	0.01
M11/102	MS2	139	45	34	20	17.780	140	7000	0.005
M11/106	MS3	176.5	60	47	25	23.825	400	5000	0.005
M11/108	MS4	217	70	53	32	31.267	500	3800	0.005
M11/110	MS5	273	90	65	40	44.399	1200	3000	0.005
M11/114	MS6	354.5	105	78	50	63.348	2500	2600	0.01

Product Overview

The Heavy Duty Precision Live Center is a critical component for any manual or CNC lathe operation involving long or heavy shafts. Mounted in the tailstock, it supports the free end of the workpiece, preventing deflection, vibration, and chatter during machining. Unlike standard or light-duty centers, our heavy-duty models are constructed with a thicker housing and a sophisticated multi-bearing internal design. This allows them to withstand the immense cutting forces generated during aggressive roughing passes on large-diameter steel, cast iron, or forged components, ensuring safe operation and superior surface finishes.

Key Features & Advantages

Triple Bearing System: Utilizes a combination of precision deep groove ball bearings, heavy-duty thrust ball bearings, and needle roller bearings. This design perfectly distributes both radial (side-to-side) and axial (end-to-end) loads, ensuring smooth rotation under extreme pressure.
Ultra-High Precision: The center shaft (point) is precision-ground after assembly to guarantee exceptional concentricity, with a maximum Total Indicator Runout (T.I.R.) of 0.005mm (0.0002"), essential for tight-tolerance turning.
Premium Hardened Steel: The center point is forged from high-carbon alloy steel (such as SUJ2 or equivalent) and heat-treated to HRC 60±2 for exceptional wear resistance against the rotating workpiece.
Coolant & Dust Proof: Equipped with a high-quality lip seal at the front of the housing to prevent cutting fluids, metal chips, and grinding dust from entering the bearing cavity, drastically extending the tool's lifespan.
Standard Morse Tapers: Available in all standard Morse Taper (MT) sizes, including MT3, MT4, MT5, and MT6, ensuring perfect compatibility with almost any lathe tailstock.

Why Partner with Pingyuan Zhenghao Machinery?

Direct Manufacturer Savings: Bypass trading companies and source premium lathe accessories directly from our factory for highly competitive wholesale pricing.
Versatile Point Designs: We offer standard 60-degree points, extended points for better tool clearance (CNC profiling), and interchangeable point live centers for maximum versatility.
Strict Quality Control: Every live center is run-in and dynamically tested for runout, bearing temperature, and rotational smoothness before leaving our facility.
OEM & Customization: We offer custom laser engraving of your brand logo and part numbers, along with tailored protective packaging for retail distributors and catalog companies.

Frequently Asked Questions (FAQ) - Selection Guide

Q1: What is the difference between a Live Center and a Dead Center?

A: A Live Center has internal bearings that allow the center point to rotate with the workpiece. This reduces friction and heat, making it ideal for high-speed turning. A Dead Center is a solid piece of steel with no moving parts; the workpiece spins against it. Dead centers offer maximum rigidity and precision but require constant lubrication and are limited to low-speed operations.

Q2: How do I know if I need a "Heavy Duty" live center?

A: You need a heavy-duty live center if you are machining large diameter, heavy, or long workpieces, or if you are taking aggressive roughing cuts (high feed rates and deep depth of cut). Light-duty centers will quickly overheat, vibrate, or suffer bearing failure under these conditions.

Q3: What does "MT4" or "MT5" mean?

A: "MT" stands for Morse Taper, which is the standard industry sizing system for the tapered shank that fits into your lathe's tailstock. You must check your lathe's manual or measure the tailstock quill to ensure you order the correct MT size (e.g., MT3 is smaller than MT5).

Q4: Can I replace the bearings inside the live center?

A: While it is technically possible for an experienced machinist to rebuild a live center, it is generally not recommended. The center point is precision-ground after the factory assembly to ensure perfect concentricity. Rebuilding it usually destroys this factory alignment, resulting in unacceptable runout. It is usually more cost-effective to replace the entire unit.

Ensure maximum rigidity and precision for your most demanding turning operations with our Heavy Duty Live Centers.

Contact our sales team today for a complete catalog and bulk pricing.