Drawn cup roller clutches

What is a drawn cup roller clutch?

A drawn cup roller clutch—sometimes also called a one-way bearing or an overrunning clutch—is a mechanical device that allows a transmission element to rotate in one direction while preventing it from rotating in the other. Its structure resembles a radial bearing, but with rolling elements (rollers or sprags) placed between an inner and an outer ring.

• Permitted direction: The rolling elements move freely, enabling rotation between the inner and outer ring without resistance.
• Opposite direction: The rolling elements lock, preventing reverse movement between the inner and outer ring.

Drawn cup roller clutches are commonly used in exercise bikes, rowing machines, hydraulic systems, elevators, conveyors, printing presses, and textile machinery, where a one-way rotation is essential.

What are the different types of drawn cup roller clutches?

Many one-way bearings exist on the market, each with specific design characteristics. Below are three primary types offered:

1. CSK
2. HF
3. DC

1. CSK Clutches

• Structure: Similar to radial bearings.
• Function: Strictly unidirectional. They can also be referred to as “keyed bearings” because certain models have key notches to secure the axle (these notches prevent unintended rotation).
• Suffixes:
  • P: Notch on the inner ring only.
  • PP: Notches on both inner and outer rings.
  • 2RS: Sealed version.
  • (No suffix): Unsealed version.
• Note: Keys themselves are not supplied with the clutch.

2. HF Clutches

• Comparable to: “HK”-type needle roller bearings.
• Key Difference: HF clutches allow rotation in only one direction, thus functioning as a one-way bearing.
• Sometimes known as: A type of drawn cup roller clutch specialized for unidirectional motion.

3. DC Clutches

• Sprag-type: Contains multiple sprags in a dual-cage assembly, providing reliable one-way locking.
• Use: Ideal for applications requiring consistent locking and high reliability.

How to choose your drawn cup roller clutch?

1. Reference Number

   • If you already know the original reference, it’s advisable to choose that exact same model.

2. Dimensions

   • Inner diameter, outer diameter, and thickness are crucial.
   • These parameters mirror those used for other standard bearings.

3. Visual Identification

   • CSK, HF, and DC types are generally distinguishable by their design details and suffixes.

4. Orientation

   • A single one-way clutch can often be flipped depending on whether you want it to lock clockwise or counterclockwise.
   • Most products include an arrow or marking to show which direction they lock.

Find your drawn cup roller clutch at 123Bearing

On our website, you’ll find a broad selection of drawn cup roller clutches from top brands, at competitive prices. Simply enter your product’s reference or the required dimensions, and we’ll show you the matching items in our catalog. You can also browse through other quality products such as bearings, belts, seals, lubricants, accessories, and tools.

If you need more assistance, our customer service team is available by phone or email to help you choose the right clutch or answer any technical questions.