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Safety Chucks Operation




With many years of experience in the Converting Industry, SUNRISE has teamed up to offer high quality Safety chucks, Powder Brakes and Clutches to the market in worldwide. 

With the invention of the Safety chuck many years ago, SUNRISE has led the Winding Industry into a new era. SUNRISE Safety Chucks are, and for the future will be, the standard of the Industry.

Safety Chucks can be supplied to suit many different shaft end configurations with a range suitable for square shaft ends from 22mm to 80mm, in either Pedestal/foot or Flange mounting, to suit individual requirements.

What is a Safety Chuck?

It is a quick coupling used in shafted center wind and center unwind applications.

Safety Chucks do three things:

1. They provide for a quick change at the end of a production run (either winding or unwinding). Therefore, there is less down time during turn around and the more cost effective in operation.

2 . They provide a means of transmitting torque to the roll being wound / unwound. Torque in the form of a drive on the rewind end of the operation and torque from a brake on the unwind side.

3. Finally, Safety Chucks provide for concentricity between centreline, or axis, of the Safety Chuck and the center line of the Air Shaft. Less eccentricity between the Air Shaft and Safety Chuck results in less vibration and wear.

How do you operate a Safety Chuck?

Safety Chucks Operation 1
To load the Safety Chucks for taking up or paying off operations, rotate the round locking collar or handwheel to zero degrees. Tilt back the handwheel exposing the square pocket. Lower the roll or mandrel square journal into the square pocket of the Safety Chuck.
Safety Chucks Operation 2
Now that the roll is seated in the SUNRISE Safety Chuck you may close the handwheels by hand prior to startup. If the roll should rotate before the handwheels are closed, the handwheels will automatically start to close at 5 degrees either side of the zero. They will be closed at 15 degrees either side of the zero. This is the safety feature of the Safety Chuck.
Safety Chucks Operation 3
Begin your operation. Torque is transmitted through the SUNRISE Safety Chuck to your roll or mandrel. Now you can control the speed of your take up, or you can control how much tension you want for your payoff.
Safety Chucks Operation 4
At the end of the operation rotate the handwheels to zero degrees, tilt the handwheels back, and remove the roll or mandrel.

What size SUNRISE Safety Chuck do I have?

The best way to determine the size of the existing SUNRISE Safety Chuck is to measure the diameter of the chrome plated tilting locking collar (handwheel) and to know the the size of the square opening in the Safety Chuck seat (pocket).
Can I retrofit a SUNRISE brand Safety Chuck in place of the Safety Chuck brand I currently use?
Yes, you can. All we need to know is:


1. What is the centerline dimension from the bottom of the Safety Chuck to the centre of the Safety Chuck?

2. What is the size of the required square opening in the seat of the Safety Chuck?

3. What is the diameter of the drive shaft?

4. What is the length of the drive shaft from the back of the housing of the SUNRISE brand Safety Chuck?

5. What is the distance from the rear wall of the square seat to the mounting hole for the Safety Chuck?



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Contact: Summer 
Tel: +86 15820882236
Contact: Shirley
Tel: +86 13825750102
Sunrise Group (Dongguan) Industrial Co., Ltd 
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