THK STROKE BUSH ST STB STI SERIES

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THK STROKE BUSH ST STB STI SERIES Specification

Accuracy
High positional accuracy

Load Capacity
Dynamic load rating up to 7650 N

Size
Available bore sizes: 4mm to 50mm

Weight
Varies by size, e.g., 15950 g

Coating
Corrosion resistant, no additional coating

Method
Linear bushing principle with steel ball circulation

Shape
Cylindrical

Hardness
60-64 HRC (hardened components)

Thread Type
No external thread

Machine Type
Compatible with automated machinery, CNC, and precision machines

Type
Linear bushing, stroke bush

Material
High-carbon bearing steel

Tolerance
High-precision tolerance, up to 0.003 mm

Surface
Smooth, ground finish

Use
Linear reciprocating motion

Application
Machine tools, industrial automation, jig equipment

Usage & Applications
Precision linear and reciprocating movement in guided mechanisms

Operating Temperature Range
-20°C to 80°C

Series
ST, STB, STI

Lubrication
Pre-lubricated, can be relubricated

Dust Protection
End seal available (option)

Outer Diameter Tolerance
0/-0.013 mm

Maximum Stroke
Up to 75 mm depending on model

Mounting
Press-fit or snap-in mounting

Inner Diameter Tolerance
0/-0.008 mm

Recommended Shaft Hardness
58 HRC minimum

Interchangeability
Interchangeable with standard bush sizes

Life Expectancy
Long service life with proper maintenance

Noise Level
Low noise operation

Ball Circulation System
Recirculating steel balls

About THK STROKE BUSH ST STB STI SERIES

The THK STROKE BUSH ST, STB, STI Series stands as the ultimate solution for precision linear and reciprocating movement. Engineered from high-carbon bearing steel, this famed series features a recirculating steel ball system and delivers sensational performance in demanding CNC and automated applications. With competitive pricing on these scarce must-have components, you benefit from long service life, low-noise operation, and high positional accuracy. The series boasts superior corrosion resistance, robust load capacity, and interchangeable sizing, making it indispensable for machine tools, industrial automation, or jig equipment.

Precision Linear Solutions for Industry Leaders

The THK STROKE BUSH ST, STB, STI Series is used by manufacturers, automation engineers, and equipment designers who demand high accuracy and reliability. Its main types of usage include enabling smooth, controlled linear and reciprocating movement in guided mechanisms. Common sites of application involve machine tools, CNC machinery, jig equipment, and industrial automation where precision, low noise, and durability are essential requirements.

Main Export Market and Delivery Details

We offer THK STROKE BUSH ST, STB, STI Series to diverse global markets, with Japan as the famed origin and wide distribution networks in Europe, Asia, and America. Packaging arrives in robust material for safe handover to distributors, importers, and suppliers. With steady supply ability, clients benefit from prompt arrival and continuous stock availability, ensuring minimal downtime for your production and maintenance schedules.

FAQs of THK STROKE BUSH ST STB STI SERIES:

Q: How does the ball circulation system benefit the operation of the THK STROKE BUSH ST, STB, STI Series?

A: The recirculating steel ball circulation system minimizes friction, enabling smoother linear motion and extending the lifespan of the stroke bush. This design also helps maintain low operational noise and high positional accuracy.

Q: What are the typical applications and usage sites for this series?

A: THK STROKE BUSH ST, STB, STI Series are commonly used in CNC machines, industrial automation equipment, jig mechanisms, and machine tools, providing precision linear and reciprocating movement in guided mechanisms.

Q: When is it recommended to relubricate the stroke bush?

A: Relubrication should be performed periodically based on operational frequency and environmental conditions to maintain optimal performance and ensure a long service life. Initial units come pre-lubricated for immediate use.

Q: Where can I purchase authentic THK STROKE BUSH components?

A: You can purchase genuine THK STROKE BUSH ST, STB, STI Series from approved distributors, suppliers, and importers specializing in industrial automation and machine tool components.

Q: What is the process for mounting these stroke bushings?

A: The bushings are designed for press-fit or snap-in mounting onto suitable shafts. They are interchangeable with standard bush sizes, simplifying installation and replacement in various machinery setups.

Q: What are the primary benefits of choosing THK STROKE BUSH ST, STB, STI for precision machinery?

A: Key benefits include exceptional accuracy, long service life, low noise levels, competitive pricing, and compatibility with automated and CNC machinery. They also offer robust load capacity and excellent corrosion resistance.

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