What’s the difference between symmetric, differential, and one-way torque?

Symmetric, differential, and one-way torque each offer a different type of motion for specific applications. Depending on your motion need, Symmetric Torque: Same resistance in both directions; offers smooth, premium motion Asymmetric Torque: 60% resistance in the opening direction; offers smoother, easier opening. Sometimes referred to as differential torque. One-Way Torque: Near-zero resistance in the opening direction with 100% of the torque in the closing direction to offer easy opening and significant torque to support heavy loads.

How do I calculate the correct torque for my application?

Determining the correct torque for your application is dependent on multiple factors and project-specific information, including: Panel weight The panel’s center of gravity Mounting orientation Desired user feel Angle of Positioning Environmental conditions To help you calculate your torque and other application calculations, get started with our hinge and torque calculators. We’ve automated the formulas you learned in school.

When is a slip device or slip clutch necessary?

Slip devices and slip clutches are useful when you want overload protection for an application. Reell slip devices provide a constant, in-line torque to extend the life of a clutch assembly by reducing engagement shock due to inertia. Slip devices are often used in these applications and more: Automated assemblies and conveyor systems Paper handling and printing equipment Medical devices with controlled motion and patient safety Office equipment like copy machines and feeders Industrial machinery that is prone to torque overload Slip devices limit torque and absorb shock to prevent damage, reduce maintenance, and protect components, leading to longer product life.

Technical Library | Reell Precision Manufacturing

Symmetric, differential, and one-way torque each offer a different type of motion for specific applications. Depending on your motion need,

Symmetric Torque: Same resistance in both directions; offers smooth, premium motion
Asymmetric Torque: 60% resistance in the opening direction; offers smoother, easier opening. Sometimes referred to as differential torque.
One-Way Torque: Near-zero resistance in the opening direction with 100% of the torque in the closing direction to offer easy opening and significant torque to support heavy loads.

Learn What the Right Torque Profile Can Solve

Determining the correct torque for your application is dependent on multiple factors and project-specific information, including:

Panel weight
The panel’s center of gravity
Mounting orientation
Desired user feel
Angle of Positioning
Environmental conditions

To help you calculate your torque and other application calculations, get started with our hinge and torque calculators. We’ve automated the formulas you learned in school.

torque-calc-diagram

Calculator Tools

Slip devices and slip clutches are useful when you want overload protection for an application. Reell slip devices provide a constant, in-line torque to extend the life of a clutch assembly by reducing engagement shock due to inertia.

Slip devices are often used in these applications and more:

Automated assemblies and conveyor systems
Paper handling and printing equipment
Medical devices with controlled motion and patient safety
Office equipment like copy machines and feeders
Industrial machinery that is prone to torque overload
Slip devices limit torque and absorb shock to prevent damage, reduce maintenance, and protect components, leading to longer product life.

Explore Clutches & Slip Devices

Reell Technical Library

Engineering Resources for Precision Positioning and Torque Control

Solve Your Positioning Challenge

Reell CAD Models and Technical Information

Reell Products & Fundamentals

What is a Friction Hinge?

What is a Torque Insert?

What is a Hollow Shaft Hinge?

What is a Spherical Joint?

What Are the Advantages of Reell Monitor Mounts?

What is a Spring?

What Custom Solutions Does Reell Design?

Where Reell Products Are Used

Frequently Asked Questions

Ready to Improve Positioning and User Feel in Your Design?