SFU 3210 Ball Screw Nut | 32mm High-Precision Linear Motion Nut

The TriQuench SFU 3210 Ball Screw Nut is a heavy-duty linear motion component designed for high-performance CNC transmission systems. Featuring a substantial 32mm diameter and a 10mm lead (pitch), this nut is engineered to deliver high-speed travel while maintaining exceptional axial rigidity. The SFU series utilizes an external circulation system with a single flange design, providing a robust architecture that excels in demanding industrial environments such as large-format CNC routers and milling machines. Manufactured from high-tensile alloy steel with induction-hardened raceways, the 3210 nut ensures minimal friction, high repeatable accuracy, and superior wear resistance. Its design is optimized for zero-backlash performance when paired with precision-ground or rolled SFU3210 ball screws, making it an essential component for machine builds requiring high-load stability and surgical precision.

High mechanical efficiency for smooth, high-torque transmission
Precision-ground ball raceways for ultra-smooth travel and low noise
Heavy-duty alloy steel construction with induction-hardened tracks
Optimized for 32mm diameter ball screws with 10mm pitch
High-load capacity suitable for large-scale industrial machinery
Superior axial rigidity for minimal deflection under heavy cutting loads
Integrated dust-proof wiper system to protect internal ball circuits

⚡ 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	SFU 3210
NOMINAL DIAMETER	32 mm
LEAD PITCH	10 mm
NUT TYPE	SFU (Single Flange)
ACCURACY GRADE	Rolled Standard (C7)
MECHANICAL	weight: 0.95 kg (approx) \| material: Hardened Alloy Steel (GCr15/SCM415H) \| surfaceHardness: HRC58-62 \| protectionRating: Standard Dust-Proof Seal

Industrial Applications

Usage Scenario	Target Industry
Large-Format CNC Router Axis Transmission (X, Y)	Machine Tool Manufacturing
Industrial Milling and Boring Machines	Stone and Marble Processing Industry
Heavy-Duty Linear Actuators and Positioning Stages	Furniture and Signage Automation
Automated Bridge Saws and Stone Cutting Machinery	Automotive and Aerospace Engineering
Packaging and Material Handling Systems	Industrial Robotics and Logistics
High-Precision X-Y Tables for Metalworking	General Engineering
Industrial Robotics and Pick-and-Place Gantry Systems	General Engineering

Technical FAQ & Operational Guide

What is the benefit of a 10mm lead (pitch) over a 5mm lead?

A 10mm lead allows for faster linear travel per revolution of the ball screw, making it ideal for large CNC routers where high-speed positioning is required on the X and Y axes.

Is this nut compatible with all 3210 ball screws?

While it follows standard SFU 3210 dimensions, we highly recommend pairing it with TriQuench SFU series ball screws to ensure the ball track matching and pitch accuracy required for smooth operation.

How often should I lubricate the 3210 ball nut?

For industrial CNC use, we recommend a high-quality lithium-based grease. Re-lubrication should occur every 100km of travel or every 3-6 months depending on the workshop environment and debris levels.

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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