1. Trailer Ramp Springs
  2. TRC
  3. Dual Ramp Spring
  4. 77 Inch Wide Doors
  5. Self-Winding Spring
  6. 120 lb Capacity
Self-Winding Ramp Door Spring for 7' Wide Enclosed Trailer - Dual Spring - 120-lb Capacity

Self-Winding Ramp Door Spring for 7' Wide Enclosed Trailer - Dual Spring - 120-lb Capacity

Item # 362SW71
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Our Price: $267.77
Trailer Ramp Springs
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Shipping Weight: 23 lbs
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362SW71 - Steel TRC Trailer Ramp Springs
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Safe and easy to install, this ramp door spring eliminates the danger that comes with installing conventional torsion springs. Upgrade to this system that lets you easily lift your enclosed trailer door. Fits 52" to 77" wide trailer doors. Lowest Prices for the best trailer ramp springs from TRC. Self-Winding Ramp Door Spring for 7' Wide Enclosed Trailer - Dual Spring - 120-lb Capacity part number 362SW71 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (4)
  • Q & A (6)
  • Photos
  • Why etrailer?

TRC Trailer Ramp Springs - 362SW71

  • Dual Ramp Spring
  • 77 Inch Wide Doors
  • Self-Winding Spring
  • 120 lb Capacity
  • 81 Inch Wide Spring
  • TRC
  • 3 Inch Tall Spring
  • Steel

Safe and easy to install, this ramp door spring eliminates the danger that comes with installing conventional torsion springs. Upgrade to this system that lets you easily lift your enclosed trailer door. Fits 52" to 77" wide trailer doors.


Features:

  • Ramp door spring lets you easily lift and lower the door on your enclosed trailer without risk of injury
    • Helps take on the weight of your trailer door so you don't have to
  • Dual springs eliminate the risk of the ramp door collapsing and causing damage or injury
    • If one cable falters, the other spring will prevent the trailer door from freefalling
  • Spring reduces wear and helps prevent damage to door hinges
  • System can be modified to fit your specific application
    • Slide the bracket and cable drum down and cut the shaft to a shorter length
  • Self-winding spring requires less torque during installation than conventional springs for safer, easier setup
  • Sturdy steel construction
  • Made in the USA


Specs:

  • Application: 52" to 77" wide trailer door
  • Dimensions: 81" wide x 3" tall x 5" deep
  • Spring capacity: 120 lbs


The Raynor Company Self-Winding Ramp Door Spring Installed

Conventional trailer ramp door springs can be very dangerous to install. For those who don't have experience winding torsion springs, it's recommended that you hire a professional to install them. However, that's not the case with this self-winding ramp door spring.


Conventional springs often require 30 or more quarter-turns with a winding bar to achieve the proper tension during installation. This can cause serious injury if not done correctly, as torsion springs that are wound too tightly can break and snap back with extreme force. Unlike a conventional ramp door spring, this self-winding door spring needs only 3 half-turns and can be rotated by hand, making it safe to install yourself.


Safe, Easy Installation

The Raynor Company Self-Winding Ramp Door Spring L-Bracket

Installation is straightforward. Bolt or weld the included L-shaped brackets above the ramp door frame on each side of the trailer. The notched bracket installs on the driver's side, while the bracket with the hole in the middle installs on the passenger's side.


The Raynor Company Self-Winding Ramp Door Spring Shaft

Lift the spring assembly and slide the ends of the shaft into the brackets. If the shaft is too long for your application, you can slide the cable drum down and cut the passenger's side of the shaft down to a shorter length.


The Raynor Company Self-Winding Ramp Door Spring C-Bracket

Secure the driver's-side end of the shaft with the included C-shaped bracket, which screws into the notched L-shaped bracket with the included flange nuts.


The Raynor Company Self-Winding Ramp Door Spring Cable

Next, mount the cable anchors to your trailer door (hardware sold separately). You can also use your existing cable anchors if you're simply replacing your ramp spring. Attach the cables to the anchors with the included bolt and cotter pin.


The Raynor Company Self-Winding Ramp Door Spring Cable Install

Slide each cable drum to the edge of the door, getting as close as you can without it rubbing against the bracket. Now you can start winding up your cable. Insert the end of the cable into the notch located at the edge of the spring and start winding the cable up, keeping it nice and taut as you go.


The Raynor Company Self-Winding Ramp Door Spring Rotation

Once the cable is completely wound, rotate the spring upward 3 half-turns. While holding the spring, use a wrench to tighten the bolts on the spring, securing it in place. Repeat this process with the spring on the other side, and you're ready to go.



TRCSW 71 TRC Enclosed Trailer Ramp Self-Winding Spring - Dual, 77" Wide - Qty 1






Customer Reviews

Self-Winding Ramp Door Spring for 7' Wide Enclosed Trailer - Dual Spring - 120-lb Capacity - 362SW71

Average Customer Rating:  4.3 out of 5 stars   (4 Customer Reviews)

Safe and easy to install, this ramp door spring eliminates the danger that comes with installing conventional torsion springs. Upgrade to this system that lets you easily lift your enclosed trailer door. Fits 52" to 77" wide trailer doors.

- 362SW71
by:

all parts delivered package intact. followed directions but , can't get spring to relax and put it down on ground. Even with only enough tension to keep cable tight. Spring is so tight coils up like a worm , on the support bar. need technical help.


Comments
Thank you for the review! If you go to the top of the product page, you will find an installation video that you may find useful as a visual aid when it comes to installing this door spring. I hope this helps!
-- Etrailer Expert Brooke M - 09/21/2021


- 362SW71
by:

Christian B was a great help. He is a great person to have on your team.



- 362SW71
by:

All items arrived in a timely fashion in really good condition. Packaging was in excellent condition. Just what I was looking for. Thanks



- 362SW71
by:


4
4

Ask the Experts about this TRC Trailer Ramp Springs

  • Can the Shaft On the Self-Winding Ramp Door Spring for 7' Doors Be Replaced
    The Self-Winding Ramp Door Spring part # 362SW71 is offered as a complete unit therefore you cannot replace just the shaft. It is also highly recommended to have professional installation done due to the dangers of working with torsion springs.
    view full answer...
  • Recommended Ramp Door Spring for 6' Wide Door
    The correct ramp spring for a six foot wide trailer door is the Self-Winding Ramp Door Spring part # 362SW71 which has a 120 lb weight capacity. There isn't an option for this doorway width with a higher rating but it will still work with such although the door will feel a bit heaver than normal.
    view full answer...
  • Ramp Spring for 72 inch Wide Door on Trailer
    You'd need a wider setup like the # ERS120D81 since your ramp door is 72 inches wide. The ramp spring you mentioned is for 6 inch wide doors so you'd want the # ERS120D81 which is 81 inches wide and would work well. This also has a spring capacity of 120 lbs which would make your 200 lbs door seem much lighter.
    view full answer...
  • Solution for Needing Replacement Spring for Torsion Style Ramp Spring
    We do not offer just the spring of the Self Winding Ramp Door Spring part # 362SW71 so only option would be to replace the entire thing.
    view full answer...
  • Can the Self-Winding Ramp Door Spring for 7' Wide Enclosed Trailer be Used for a Box Truck Door
    Assuming the capacity and dimensions of the Self-Winding Ramp Door Spring for 7' Wide Enclosed Trailer - Dual Spring - 120-lb Capacity # 362SW71 match up with what you have, you should be able to use this spring for a roll up door. We recommend taking these to an installer like a local garage door company unless you have experience with torsion spring systems. I recommend sending the spring information along with the dimensions on your truck and current spring to the installer first....
    view full answer...
  • Suggested Ramp Spring for a 72 Inch Wide Ramp
    From the measurements listed, the 66 inch assembly does sound like it is going to be too short. Though, I can't say this with 100% certainty, I am pretty sure the angle will be too great for the cable to be secure when the ramp is closed. With that being said, I recommend going with something a bit longer. The TRC Ramp Door Spring # 362SW71 can adjust to fit a door width from 52 inches to 77 inches and will be a much better option. This is also self-winding and has a 120 pound capacity.
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee David F
Installed by:
David F
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Mike S
Written by:
Mike S

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