A2-6 Lathe Spindle (Standard) for CNC Turning Machines

The A2-6 Lathe Spindle (Standard) is a core component for high-precision CNC turning and lathe machines. Engineered for heavy-duty industrial environments, this belt-driven spindle features an A2-6 nose taper and a significant 56mm bore diameter, allowing for versatile bar work and large workpiece machining. It operates at a maximum speed of 3500 RPM, supported by a superior '4+2' bearing configuration (7018 P4 front and 7016 P4 rear) to ensure exceptional radial and axial rigidity. The 565mm total length and 170mm h6 locating diameter provide the mechanical stability required for high-accuracy metal cutting. Factory grease-packed for low maintenance and long service life, this spindle is the industry standard for reliable turning performance.

Standard A2-6 Nose Taper interface
Large 56mm Bore Diameter for bar feeding
High-Precision P4 Grade Bearing configuration (4+2 setup)
Max Operating Speed of 3500 RPM
Maintenance-free Grease Packed lubrication
Rigid 170 h6 Locating Diameter for precise mounting

⚡ Quick Technical Datasheet:

Power OutputN/A

Max SpeedN/A

Voltage RatingN/A

Collet InterfaceER Standard

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Comparative Technical Spindle Motor Configurations Matrix

Use the structural data catalog matrix below to evaluate power outputs, maximum RPM, operating voltages, and cooling styles across standard TriQuench CNC spindle models.

Spindle Capacity	Operating Speed	Operating Voltage	Cooling System
12.0 kW	18,000 RPM	380 V	Water-Cooled
0.8 kW	24,000 RPM	220 V	Air-Cooled (Long Shaft)
3.7 kW	40,000 RPM	380 V	Water-Cooled ISO20
9.0 kW	18,000 RPM	380 V	Air-Cooled

Technical Specifications

Technical Parameter	Engineering Specification Value
MODEL NUMBER	MTLSA2-6 DIA 170 X 320MM
NOSE TAPER	A2-6
MAX SPEED	3500 RPM
BORE DIAMETER	56 mm
FLANGE DIAMETER	230 mm
TOTAL LENGTH	565 mm
LOCATING DIAMETER	170 h6 x 320 mm
LUBRICATION TYPE	Grease Packed
BEARING SETUP	frontBearing: 7018 P4 \| rearBearing: 7016 P4 \| totalBearings: 4 + 2 configuration
MECHANICAL	bodyType: Standard Belt Driven \| precisionGrade: High Precision Industrial

Industrial Applications

Usage Scenario	Target Industry
High-Precision CNC Turning Centers	Automotive and Transportation Manufacturing
Industrial CNC Lathe Machines	Industrial Machine Tool Production
Metalworking and Part Fabrication	Aerospace and Defense Engineering
Heavy-Duty Machining Operations	Heavy Metal Fabrication Shops
Automotive Component Turning	General Engineering and Tool Rooms
Custom Lathe Headstock Manufacturing	General Engineering

Technical FAQ & Operational Guide

What does the A2-6 designation mean?

A2-6 refers to the standard American Standard spindle nose taper. It defines the flange diameter, bolt circle, and taper dimensions, ensuring compatibility with standard A2-6 chucks and tool holders.

Why is the 4+2 bearing configuration beneficial?

The 4+2 setup (4 bearings at the front and 2 at the rear) provides extreme rigidity. This allows the spindle to handle heavy radial and axial cutting forces during turning without deflection, resulting in better surface finishes and accuracy.

Is any external lubrication required for this spindle?

No, this spindle is factory grease-packed. This 'Lubricated for Life' design reduces maintenance requirements and prevents contamination common in oil-mist systems.

How is the rotational balancing calibrated on this spindle motor?

Every spindle motor is dynamically balanced in accordance with the ISO 1940 balancing standard to guarantee vibration-free running and maximum stability at high RPMs.

What are the runout tolerances of the shaft and collet interface?

The internal shaft taper maintains a runout accuracy tolerance of under 0.003mm (3 microns), maintaining precise tool concentricity and preventing premature cutter wear.

What cooling precautions are built-in to prevent heat exhaustion?

Built-in temperature dissipation channels support continuous water/liquid cooling circulation or forced fan airflow, preventing thermal expansion of components.

Is this spindle motor compatible with standard VFD inverters and collets?

Yes, the spindle supports direct electrical integration with standard variable frequency drives (VFD) and accepts industrial ER collets (ER11, ER20, ER25, or ER32) to match standard toolholder dimensions.

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A2-6 Lathe Spindle (Standard) for CNC Turning Machines

Standard A2-6 Nose Taper interface

Large 56mm Bore Diameter for bar feeding

High-Precision P4 Grade Bearing configuration (4+2 setup)

Max Operating Speed of 3500 RPM

Maintenance-free Grease Packed lubrication

Rigid 170 h6 Locating Diameter for precise mounting

⚡ Quick Technical Datasheet:

Power OutputN/A

Max SpeedN/A

Voltage RatingN/A

Collet InterfaceER Standard

Comparative Technical Spindle Motor Configurations Matrix

Use the structural data catalog matrix below to evaluate power outputs, maximum RPM, operating voltages, and cooling styles across standard TriQuench CNC spindle models.

Spindle Capacity	Operating Speed	Operating Voltage	Cooling System
12.0 kW	18,000 RPM	380 V	Water-Cooled
0.8 kW	24,000 RPM	220 V	Air-Cooled (Long Shaft)
3.7 kW	40,000 RPM	380 V	Water-Cooled ISO20
9.0 kW	18,000 RPM	380 V	Air-Cooled

Technical Parameter

Engineering Specification Value

MODEL NUMBER

MTLSA2-6 DIA 170 X 320MM

NOSE TAPER

A2-6

MAX SPEED

3500 RPM

BORE DIAMETER

56 mm

FLANGE DIAMETER

230 mm

TOTAL LENGTH

565 mm

LOCATING DIAMETER

170 h6 x 320 mm

LUBRICATION TYPE

Grease Packed

BEARING SETUP

frontBearing: 7018 P4 | rearBearing: 7016 P4 | totalBearings: 4 + 2 configuration

MECHANICAL

bodyType: Standard Belt Driven | precisionGrade: High Precision Industrial

Usage Scenario

Target Industry

High-Precision CNC Turning Centers

Automotive and Transportation Manufacturing

Industrial CNC Lathe Machines

Industrial Machine Tool Production

Metalworking and Part Fabrication

Aerospace and Defense Engineering

Heavy-Duty Machining Operations

Heavy Metal Fabrication Shops

Automotive Component Turning

General Engineering and Tool Rooms

Custom Lathe Headstock Manufacturing

General Engineering