Torsion springs for sectional doors – choose and replace them safely
Is the gate running sluggishly, unevenly weighted, and staying half open? Then the spring is the culprit. Here's the shortcut: correctly identify the problem, order the right spring, and professionally balance the system.
Introduction
The spring is the heart of your sectional garage door. If it fails, the motor struggles – or the door stops altogether. The good news is: with the right torsion spring or tension spring , the system will run smoothly, quietly, and safely again. In this guide, we show you how to correctly identify the spring (markings & dimensions), which mistakes to avoid, and how to ensure a smooth installation. Plus: verified links to springs & accessories – directly from Tormeister 24.
Table of contents
✅ Advantages & Benefits
The right spring takes weight off the gate leaf – the drive has to work less.
Balanced gates stay in position, stop cleanly and protect components.
Fewer peak loads mean less wear and tear on the drive, rollers & hinges.
⚙️ Technical Background
Torsion springs are usually located transversely at the top and work by twisting; tension springs are located laterally and extend when opening. Both compensate for the weight of the gate.
Quality springs typically last 15,000–25,000 cycles – depending on weight and usage. Spring breakage often occurs in pairs → always replace both .
Spring systems are under high tension. Replacement and preloading should be carried out by specialists. If needed, use our consultation check (photo/type).
🧭 Selection & Identification
- Check the markings on the spring (e.g. L703, L709, L724, R724 / wire diameter / number of turns LH/RH).
- Take measurements : wire thickness, inner diameter, relaxed length.
- Gate parameters : width/height, gate weight, fitting type.
Unsure? Simply send us a photo and measurements – we'll match the spring for you.
📊 Comparison & Product Recommendations
Examples of common Hörmann series – please check the markings/dimensions.
| Series / Identifier | Mission | Notice | Direct link |
|---|---|---|---|
| L703 | Hörmann sectional doors | Precise fit, robust design | About the product |
| L709 | Hörmann sectional doors | Without clamping head & spring carrier – flexible during assembly | About the product |
| L724 | Hörmann sectional doors | Durable spring steel, precision manufactured | About the product |
| R724 | Hörmann sectional doors | Perfect fit and robust for reliable function | About the product |
| Tension spring systems | TS Fittings / Private | Check the condition of the ropes; replace them in sets if necessary. | To overview |
| Tools | Installation & Service | Tensioning irons/mandrels for controlled pre-tensioning | View tools |
🔧 Application & Commissioning
- Always swap in pairs, ensuring left and right sides are identical.
- Adjust the preload gradually and symmetrically.
- Testing follow-through/balance: Gate in half-opening position – must not fall or rise.
- Even rope tension, no rope slippage.
- Readjust the end positions of the drive, perform a safety test.
- Tighten and mark the screws/pins.
Only use suitable tensioning tools when working with torsion springs. If unsure, hire a professional installer – we can help you find one.
💡 Practice, Acknowledgements & Mini-News
Hörmann L709 pair change + balance adjustment → Gate runs smoothly again, drive significantly relieved.
Thank you for submitting your spring identification numbers and photos of measurements. This allows us to make a recommendation faster – fewer questions, faster shipping.
News: In the categories Torsion Springs/Tension Springs and Clamping Tools you will now find bundled selection & FAQ information – making advice even easier.
🧰 Maintenance & Care
- Annual visual inspection: springs, ropes, drums, bearing brackets.
- Lightly grease (according to manufacturer's instructions), remove dirt from windings and drums.
- Balance test, semi-open; if deviations occur, professional re-evaluation is necessary.
🏗️ Trust & Advice
Specialist retailer & service: We identify your spring using photo/identifier/dimensions and recommend the appropriate set with accessories.
Direct line: Use measurement sheets & downloads or watch short assembly videos – then decide.
❓ FAQ
How can I recognize a spring defect?
The gate suddenly becomes heavy, hangs crooked, or stops altogether. Visible signs: broken twist, loose ropes, uneven balance.
Do I need to replace both springs?
Yes, recommended. Springs age similarly. Replacing them in pairs ensures consistent performance and reduces subsequent damage.
Can I replace the torsion spring myself?
Only use with expert knowledge and clamping tools – otherwise risk of injury. We recommend professional installation.
What data do you need for the recommendation?
Spring identification (e.g. L709), wire thickness, inner diameter, relaxed length; alternatively, photos + gate size/fitting type.
Light and quiet again: the right spring makes all the difference.
Identify the spring, order the correct one, tension it properly – done. If you have any questions: a quick photo check, a clear recommendation.
Discover torsion springs & tension springs View clamping tools Check wire ropes
