News and Information

Standard Ball Screw Module of TOYO ETH Series (Complete Analysis)

2026-01-06 13:40:50 toyo管理员

I. Series Overview

The TOYO ETH Series is a standard ball screw-driven linear module launched by Taiwan-based TOYO for general industrial environments. It is suitable for automation scenarios requiring a balanced combination of positioning accuracy and load capacity.

Adopting C7-class rolled ball screws and a dual linear guide rail design, this series boasts high rigidity, high precision and high stability. It can be used as a single-axis unit or integrated into multi-axis Cartesian robots (XY, XYZ configurations), and is widely applied in fields such as electronic manufacturing, automated assembly and laser processing.

Core Positioning

Application Environment: General industrial environments (non-cleanroom)
Drive Method: Ball screw drive (differentiated from the belt-driven ETB Series and cleanroom-specific ECH Series)
Accuracy Grade: Repeat positioning accuracy of ±0.005mm (small models such as ETH5M/6M feature ±0.01mm accuracy)
Key Advantages: Moderate price, stable performance, wide load range (30kg~130kg)

II. Full Model Classification

The ETH Series is categorized into four types based on dimensions and characteristics: small, medium, large and long-stroke, totaling 9 main models:

Size Classification	Model	Body Width	Maximum Stroke	Maximum Horizontal Load	Core Features
Ultra-small	ETH5M/ETH6M	51mm	50-650mm	30kg	Lightweight design, suitable for confined spaces
Small	ETH10/ETH12	60-80mm	50-1050mm	50kg	High cost-effectiveness, ideal for basic automation applications
Medium	ETH13/ETH14	135mm	50-1050mm	70kg/110kg	ETH13: Cost-efficient; ETH14: High rigidity
Large	ETH17/ETH22	170mm/220mm	1250mm/2400mm	120kg/130kg	High load capacity, long-stroke capability
Long-stroke	ETH17M/ETH22M	170mm/220mm	Up to 2400mm	120kg/130kg	Optimized structure for ultra-long stroke applications

III. Core Technical Parameter Comparison (Key Models)

1. Basic Parameter Overview

Model	Body Width	Screw Specification	Lead Options	Rated Thrust (N)	Maximum Speed (mm/s)	Repeat Positioning Accuracy
ETH14	135mm	Ø25mm	5/10/20/32mm	1388/694/347/218	800/1000/1200/1600	±0.005mm
ETH17	170mm	Ø32mm	5/10/20/32mm	2000/1000/500/313	800/1000/1200/1600	±0.005mm
ETH22	220mm	Ø40mm	5/10/20/32mm	2800/1400/700/440	800/1000/1200/1600	±0.005mm
ETH17M	170mm	Ø32mm	5/10/20/32mm	2000/1000/500/313	800/1000/1200/1600	±0.005mm

2. Relationship Between Lead and Performance (Taking ETH14 as an Example)

Lead selection directly affects the balance between speed and thrust: large leads are suitable for high-speed, light-load applications, while small leads excel in low-speed, heavy-load scenarios.

Lead	Rated Thrust	Maximum Speed	Motor Speed Limit	Application Scenarios
5mm	1388N	800mm/s	2400rpm	High-precision, high-thrust applications
10mm	694N	1000mm/s	2000rpm	Universal use, balancing speed and thrust
20mm	347N	1200mm/s	1800rpm	Medium-speed, medium-load applications
32mm	218N	1600mm/s	1500rpm	High-speed, light-load applications (e.g., vision inspection)

3. Stroke and Speed Limitations

Standard Stroke: 50-1050mm (in 50mm increments)
Long-stroke Models: ETH17/22/17M/22M can reach 1250-2400mm
Stroke Warning: Screw deflection occurs when stroke exceeds 750mm; reduce operating speed if stroke exceeds 2050mm

IV. Structural Design Features

1. Core Advantages of Mechanical Structure

Dual Linear Guide Rail Design: Delivers 40% higher rigidity than single-rail designs, ensuring better stability during high-speed operation and effectively reducing vibration and noise.
Optimized Slider Locking Mechanism: Locking points are positioned directly above the guide rail center, enhancing rigidity and stability during high-speed movement.
Screw Support Structure: Preloaded angular contact bearings at both ends minimize screw bending deformation and improve positioning accuracy.
Aluminum Alloy Body: High-strength extruded profile achieves lightweight design while maintaining structural rigidity; surface anodization provides corrosion resistance.

2. Key Component Configuration

Component	Specification	Function
Ball Screw	C7-class rolled screw	Delivers ±0.005mm repeat positioning accuracy
Linear Guide Rail	Brands like THK/PMI	Ensures high rigidity, low friction coefficient and long service life
Bearing	Preloaded angular contact bearing	Withstands radial and axial loads, improving screw stability
Dust Protection Device	Lip seal + scraper	Prevents dust ingress and protects internal components

V. Application Scenarios and Selection Guide

1. Typical Application Fields

Industry	Application Cases	Recommended Models
Consumer Electronics	Mobile phone/tablet assembly, screen lamination, camera module assembly	ETH13/ETH14 (medium load, high precision)
Automotive Electronics	On-board display installation, sensor assembly, PCB inspection	ETH17 (high load, long stroke)
Industrial Automation	Automatic screw locking, material handling, positioning platforms, testing equipment	ETH14/ETH17 (high versatility)
Laser Processing	Laser marking, laser cutting, laser soldering	ETH14/ETH17 (high speed, high precision)
Medical Equipment	Medical device component assembly, testing instrument positioning	ETH5M/6M (compact design, compatible with clean environments)

2. Core Selection Steps

Determine Load Requirements: Calculate effective load based on horizontal/vertical installation (vertical load is typically 50% of horizontal load).
Select Lead:

Low-speed, high-thrust: 5mm/10mm lead
Medium-speed, medium-load: 20mm lead
High-speed, light-load: 32mm lead (maximum speed 1600mm/s)

Determine Stroke: Standard stroke 50-1050mm; choose ETH17M/22M for long-stroke requirements (up to 2400mm).
Match Motor Power:

Small models: Servo motor below 200W
Medium models: 200W-400W servo motor
Large models: 400W-750W servo motor

Consider Special Requirements:

Multi-axis integration: Select models from the same series to ensure installation compatibility.
Long stroke: Pay attention to screw deflection; reduce speed if stroke > 750mm.

VI. Comparison with Other Series (Core Differences)

Series	Drive Method	Application Environment	Repeat Accuracy	Maximum Speed	Price Range
ETH	Ball Screw	General Environment	±0.005mm	1600mm/s	Medium (high cost-effectiveness)
ETB	Timing Belt	General Environment	±0.02mm	3000mm/s	Low (high speed, low precision)
ECH	Ball Screw	Cleanroom (Class10)	±0.005mm	1600mm/s	High (cleanroom design)
GTY	Built-in Rail Screw	Confined Spaces	±0.005mm	1200mm/s	Medium (space-saving)

VII. Supplementary Information and Precautions

Service Life and Maintenance

Standard Service Life: 10,000km (based on rated load and speed)
Maintenance Cycle: Inspect screw lubrication and guide rail cleanliness after 5000km of operation or 6 months of use.

Installation Recommendations

Mounting Surface Flatness Requirement: ≤0.02mm/m
Levelness Error: ≤0.03mm/m
Multi-axis Integration: Ensure perpendicularity error of each axis ≤0.05mm/m

Dongguan Area Services

South China Level 1 Agent: Dongguan Oruin Automation Technology Co., Ltd. (Address: 10th Floor, Huake City, No.183 Chonghuan Middle Road, Dongguan)
Technical Support: Provides selection guidance, installation and commissioning, maintenance and repair services.

Summary

The TOYO ETH Series is a cost-effective choice in the industrial automation field, covering a load range from 30kg to 130kg, with ±0.005mm repeat positioning accuracy to meet most precision positioning requirements. By selecting the appropriate model, lead and motor, it can be adapted to automation applications in various industries such as consumer electronics, automotive electronics and laser processing. For more precise selection, it is recommended to contact TOYO's official agents for technical support.