There are three types of cable drums that correspond to three types of overhead-type garage doors: standard-lift, vertical-lift, and high-lift. Each cable drum is manufactured to help the garage door remain balanced as it opens and closes with the help of the torsion springs.
Standard-Lift Cable Drums
Standard-lift cable drums are flat for the most part. Toward the outside of the door, the last 3/4 of a turn or so on the grooves of the cable drum is slightly raised. This helps keep the garage door balanced as it begins to open.
Vertical-Lift Cable Drums
Vertical-lift cable drums are taller than standard-lift drums. When the garage door is closed, the cable is farther from the shaft. As the door opens, the cable wraps up on the drum and comes closer to the shaft
High-Lift Cable Drums
High-lift cable drums have both a flat portion like the standard-lift drums and a raised portion like the vertical-lift drums. The cable runs on the raised portion while the garage door opens vertically then switches over to the flat portion when the door begins to run on the horizontal track
8 FT Standard Lift Drum (Set) from Chinese Manufacturer
Quick Details
- Type: Other Door & Window Accessories
- Place Of Origin: Anhui, China (Mainland)
- Brand Name: QY
- Material: Aluminum
- Usage: Door & Window Accessories
- Name: 8'' SL Cable Drum, Steel Wire Wheel For Door
- Payment Term: TT 30% Deposit,70% Before Shippment
- Operating Load Weight:240Kgs
- Steel Wire Rope Diameter:3.18mm
- Apply To 25.4 Mm Outer Diameter Of Shaft Rod.
- Maximum Lifting Height:2440mm
FAQ:
How to make Torsion Spring as per your enquiries?
1,Pls provide me main specification as follows:
•Wirediameter
•Material
•Body length
•Maximum outside diameter, minimum inside diameter
•Number of coils
2, detailed drawing or real samples is very useful.
3, door dimension(door width&height,door weight and lifting systerm) is also Ok, we can custom designed.
Q: Are you a manufacturer ? Do you Accept OEM?
A: Yes, as a professional manufacturer, we have been in spring field for over 14years and we accept OEM! Just give us your design, we will make samples for you soon.
Q:What is your strengths?
A: •Competitive price
•High quality
•Good communication with customers
•Best after-sales service
Q:What is your packing?
A: •Standard packing,PE bags, plywood cases, wooden carton, pallet.
•Based on your requirements.
Q: How long is your delivery time?
A: Within 3-5 days after order confirmed. Of course, it depends on the actual quantity.
Q: What payment method do you accept?
A: we accept T/T, western union or paypal before production. Other payments are negotiable
Q: What is your terms of payment ?
A: •Payment<=1000USD, 100% in advance.
•Payment>=1000USD, 30% T/T in advance ,balance before shipment.
Q: What is your sea shiping port?
A: SHANGHAI port usually; any problems contact us ASAP.
Q: What is your warranty?
A: One year after sale service.
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