E-Series Electric Torque Screwdrivers

Quick Answer

The E-Series is a line of electric clutch screwdrivers designed for precision assembly applications requiring accurate, repeatable torque control. Featuring a precision automatic shut-off clutch, adjustable torque settings, and lever-start or push-to-start configurations, the E-Series plugs directly into a standard power outlet without requiring a separate transformer or power supply.

Who This Is For

Manufacturing engineers
Process engineers
Quality engineers
Assembly operators
Electronics manufacturers
Medical device manufacturers
Aerospace manufacturers
Industrial assembly facilities

When Should You Use This?

Use the E-Series when:

Low- to medium-torque fastening is required
Repeatable torque control is important
A simple plug-in electric screwdriver is preferred
Continuous production fastening is performed
Ergonomic operator comfort is desired
Adjustable torque settings are needed
Production environments require reliable fastening performance

When Should You NOT Use This?

The E-Series may not be the best choice when:

High-torque fastening is required
Torque and angle traceability are needed
Fastening data collection is required
Advanced process control or error-proofing is necessary
A cordless screwdriver is preferred

For applications requiring programmable fastening strategies or torque and angle monitoring, consider the Mountz ECT-Series or EPT-Series.

How the E-Series Works

The E-Series uses an electric motor to drive a precision automatic shut-off clutch.

During operation, the screwdriver:

Delivers repeatable torque output
Automatically shuts off when the preset torque is reached
Allows external torque adjustment
Plugs directly into a standard AC power outlet
Supports consistent production fastening

Result:

Accurate torque control
Improved fastening consistency
Reduced operator fatigue
Increased production efficiency
Reliable assembly performance

Core Features

Precision automatic shut-off clutch
Direct AC power operation (no separate power supply required)
External torque adjustment scale
Lever-start and push-to-start models
Ergonomic lightweight housing
Power cord with integrated noise filter (EMC)
1/4" female hex drive
Compatible with optional Torque Covers
Designed for production fastening applications

Configuration Options

Lever-start models
Push-to-start models
External torque adjustment
Direct plug-in AC power
Optional Torque Covers

Available Models

The E-Series includes four electric torque screwdrivers designed for precision low- and medium-torque fastening applications. Models are available in lever-start and push-to-start configurations with torque capacities ranging from 0.9 to 21.7 lbf.in.

E-Series Model Chart

Model	Driver Type	110V Item #	220V Item #	Torque Range	RPM	Drive Size
E180-A	Lever Start	145645	145646	0.9–15.6 lbf.in (10–176 cN·m)	1000	1/4" Female Hex
E180-PS	Push-to-Start	145647	—	2.2–15.6 lbf.in (25–176 cN·m)	1000	1/4" Female Hex
E250-A	Lever Start	145649	145650	1.3–21.7 lbf.in (15–245 cN·m)	630	1/4" Female Hex
E250-PS	Push-to-Start	145651	—	2.2–21.7 lbf.in (25–245 cN·m)	630	1/4" Female Hex

Model Selection Guide

If you need:	Recommended Model
Lowest torque applications	E180-A
General electronics assembly	E180 Series
Medium-torque production fastening	E250 Series
Higher torque capacity	E250-A or E250-PS
Lever-start operation	E180-A or E250-A
Push-to-start operation	E180-PS or E250-PS

Compatible Accessories

Accessory	Item Number	Purpose
Black Torque Cover	145654	Prevents accidental torque adjustment
Blue Torque Cover	145655	Prevents accidental torque adjustment
Green Torque Cover	145656	Prevents accidental torque adjustment
Gold Torque Cover	145657	Prevents accidental torque adjustment
Grey Torque Cover	145658	Prevents accidental torque adjustment

Setup & Adjustment

Plug the E-Series screwdriver directly into a compatible AC power outlet.
Install the appropriate driver bit.
Adjust the external torque setting for the application.
Verify the torque setting using a calibrated torque analyzer before production.
Install an optional Torque Cover if protection against accidental torque adjustment is required.
Perform sample fastenings and make final torque adjustments before beginning production.
Periodically verify torque output as part of your quality control program.

Common Applications

The E-Series is commonly used in:

Electronics assembly
Medical device manufacturing
Aerospace assembly
Telecommunications equipment assembly
Consumer electronics manufacturing
Industrial product assembly
General production environments requiring low- to medium-torque fastening

Use Cases (Real-World Examples)

Electronics Assembly

Problem: Precision electronic assemblies require accurate, repeatable torque to protect sensitive components and ensure product quality.

Solution: The E-Series provides consistent torque control with a precision automatic shut-off clutch, helping improve fastening accuracy while reducing assembly variation.

Medical Device Manufacturing

Problem: Small fasteners must be installed consistently to meet quality and regulatory requirements.

Solution: The E-Series delivers repeatable fastening performance with adjustable torque settings and ergonomic operation for precision assembly applications.

High-Volume Production

Problem: Production environments require dependable fastening tools that can operate throughout repetitive assembly cycles.

Solution: The E-Series provides reliable fastening performance with automatic shut-off and a lightweight ergonomic design to help reduce operator fatigue.

General Industrial Assembly

Problem: Assembly workstations require a simple electric screwdriver that is easy to install and operate.

Solution: The E-Series plugs directly into a standard AC power outlet, eliminating the need for a separate transformer while providing consistent torque control.

Maintenance

Verify torque output regularly using a calibrated torque analyzer.
Inspect the bit holder and drive components for wear or damage.
Keep the screwdriver clean and free of dust and debris.
Inspect the power cord before operation and replace it if damaged.
Replace worn screwdriver bits to maintain fastening accuracy.
Periodically verify torque settings as part of your preventive maintenance program.

Integration & Advanced Features

Precision automatic shut-off clutch
Direct AC power operation (no separate power supply required)
External torque adjustment scale
Lever-start and push-to-start configurations
Power cord with integrated EMC noise filter
Ergonomic lightweight housing
Compatible with optional Torque Covers
Designed for precision low- to medium-torque production fastening applications

Media & Supporting Content

Need Help?

Contact Applications Engineering for setup guidance
Speak with Sales for product selection
Call us:
- North America:(408) 850-9978
- International: +44 1428 741756

E-Series Electric Torque Screwdrivers – FAQ & User Guide