A2-5 Lathe Spindle (Short Spindle)

The A2-5 Lathe Spindle (Short Spindle) is a specialized belt-driven unit engineered for CNC turning centers where space is at a premium without compromising on capacity. Despite its compact 370mm total length, this spindle offers an impressive 46mm bore diameter, providing superior versatility for bar-feeding operations compared to standard models. It features a rigid 2+2 bearing arrangement, utilizing 7014 P4 front bearings and 7013 P4 rear bearings for stable high-speed performance up to 5000 RPM. Factory-packed with grease lubrication, this unit is designed for long-term reliability and low maintenance in high-precision industrial lathe applications.

Compact A2-5 Short Series design
Large 46mm Bore Diameter for bar work
High-speed precision up to 5000 RPM
Space-saving 370mm total length
P4 Grade precision front (7014) and rear (7013) bearings
Precision 140 h6 Locating Diameter

⚡ 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
NOSE TAPER	A2-5
FLANGE DIAMETER	180 mm
LOCATING DIAMETER	140 h6 x 200 mm
BORE DIAMETER	46 mm
TOTAL LENGTH	370 mm
MAX SPEED	5000 RPM
LUBRICATION TYPE	Grease Packed
FRONT BEARING TYPE	7014 P4 (x2)
REAR BEARING TYPE	7013 P4 (x2)
BEARING CONFIGURATION	2 + 2 Set
MECHANICAL	housingMaterial: Hardened Alloy Steel \| driveType: Belt Driven

Industrial Applications

Usage Scenario	Target Industry
Space-Optimized CNC Turning Centers	Precision Electronics Component Machining
Compact CNC Lathe Machines	Medical Device Manufacturing
Automated Small-Scale Bar Feeding	Automotive Small Parts Production
High-Precision Micro and Small Part Turning	Tool and Die Shops
Custom Machine Building and Retrofitting	Small-Scale Industrial Engineering

Technical FAQ & Operational Guide

What is the main advantage of the A2-5 Short Spindle?

The primary advantage is its compact 370mm total length combined with a larger 46mm bore, allowing for larger material capacity in machines with limited internal space.

Does the shorter length affect the precision?

Not at all. This spindle uses the same P4 precision grade bearings (7014/7013) and balancing standards as our larger models.

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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A2-5 Lathe Spindle (Short Spindle)

Compact A2-5 Short Series design

Large 46mm Bore Diameter for bar work

High-speed precision up to 5000 RPM

Space-saving 370mm total length

P4 Grade precision front (7014) and rear (7013) bearings

Precision 140 h6 Locating Diameter

⚡ 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

NOSE TAPER

A2-5

FLANGE DIAMETER

180 mm

LOCATING DIAMETER

140 h6 x 200 mm

BORE DIAMETER

46 mm

TOTAL LENGTH

370 mm

MAX SPEED

5000 RPM

LUBRICATION TYPE

Grease Packed

FRONT BEARING TYPE

7014 P4 (x2)

REAR BEARING TYPE

7013 P4 (x2)

BEARING CONFIGURATION

2 + 2 Set

MECHANICAL

housingMaterial: Hardened Alloy Steel | driveType: Belt Driven

Usage Scenario

Target Industry

Space-Optimized CNC Turning Centers

Precision Electronics Component Machining

Compact CNC Lathe Machines

Medical Device Manufacturing

Automated Small-Scale Bar Feeding

Automotive Small Parts Production

High-Precision Micro and Small Part Turning

Tool and Die Shops

Custom Machine Building and Retrofitting

Small-Scale Industrial Engineering