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Easy-to-weld, heavy-duty hinge features a grease zerk fitting that lets you easily grease the pin for smooth and long-lasting operation. This durable steel hinge replaces a damaged or rusted hinge on your trailer's ramp or access door.
Features:
Specs:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at the ramp door hinge from Polar 00:00:05 hardware. This hinge is designed for ramps or heavy access doors on your trailers. It's made from a very strong and durable steel construction. It's going to have that plain or raw finish, which allows for easier welding for the installation. You'll notice that right here it does come with a grease fitting. That's going to allow for long life and smooth operation.
Once this is installed all you have to do is attach a grease gun to that, pump in some grease. That's going to lubricate the internal pin and it's just going to allow for really nice, smooth operation. Overall, it's going to increase the life of the hinge. A few measurements to go over with you real quick. The thickness of the plate right here is going to be 1/4-inch steel. Going this direction, that plate is going to measure 4-inches.
Going this direction, it's going to measure 2 1/4-inches. The length edge to edge, we're looking at a measurement of 8 1/4-inches. Then the ends are going to have a diameter of right around 1-inch. Really nice operation though. It's going to rotate all the way.
Very easy to do and again if that ever gets tight or whatever, hook up a grease gun, pump in the grease, it's going to lubricate the internal components. That's going to do it for today's look at the ramp door hinge from Polar hardware.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Gwendolyn Y.
1/8/2026
Big or small we always got you covered, Jesse! What kind of trailer are you going to be putting these on?
Gwendolyn Y.
1/8/2026
Victoria H.
11/25/2024
What a beautiful and fun car to drive, Al. Thanks for sharing the photos!
Gwendolyn Y.
11/25/2024
Hey Al! That is one sweet ride and I love the action shot you sent in!
Mike L.
8/11/2026
If you add plenty of grease via the zerk fitting, it'll loosen up pretty quickly!
Hassan
6/25/2025
The product has been working well and we have no problems with the hinges after a year!
Gq-rod
12/14/2017
One year later they are still working perfectly. They have stood up well, can be greased easily, hold a lot of weight, over 800 pounds at a time have gone up this ramp using 3 of these hinges, no issues.
Boris
2/20/2023
After a year of use my rear ramp door hinge is still holding up as if it was just installed yesterday. There is no slack nor looseness what so ever. Its a great product, very durable in deed. Definitely made the right choice with that purchase. 100 still satisfied.
Jon R.
1/14/2018
All working fine. Thanks.
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Gwendolyn Y.
3/5/2025
Wow, 50 years? That's awesome, Joe! l feel like the trailer has turned into a family heirloom of sorts.