---
product_id: 9596826
title: "D 1791 Steel Sliding Door Roller, 1-1/8 in. Diameter"
brand: "prime-line"
price: "R430"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Prime Line"
url: https://www.desertcart.co.za/products/9596826-d-1791-steel-sliding-door-roller-1-1-8-in
store_origin: ZA
region: South Africa
---

# 3/4 inch wide x 1 inch tall housing with 1/4-20 threaded mounting hole 1-1/8 inch concave steel ball bearing rollers Stamped steel housing with yellow zinc corrosion resistance D 1791 Steel Sliding Door Roller, 1-1/8 in. Diameter

**Brand:** prime-line
**Price:** R430
**Availability:** ✅ In Stock

## Summary

> 🚪 Slide into smoothness with Prime-Line precision!

## Quick Answers

- **What is this?** D 1791 Steel Sliding Door Roller, 1-1/8 in. Diameter by prime-line
- **How much does it cost?** R430 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/9596826-d-1791-steel-sliding-door-roller-1-1-8-in)

## Best For

- prime-line enthusiasts

## Why This Product

- Trusted prime-line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **DIY-Friendly Installation:** Simple Phillips head screwdriver setup means you’re back in action fast, no pro needed.
- • **Built to Last, Built for You:** Durable stamped steel housing with corrosion-resistant yellow zinc finish stands up to the elements and time.
- • **Effortless Glide, Every Time:** Precision-engineered steel ball bearings ensure whisper-quiet, smooth sliding performance.
- • **Perfect Fit for Vinyl Patio Doors:** Specifically designed for Milgard and compatible vinyl doors—no more guesswork or ill-fitting parts.
- • **Restore & Upgrade Your Sliding Door:** Replace worn rollers to eliminate dragging and noise, bringing your door back to showroom smoothness.

## Overview

The Prime-Line D 1791 Steel Sliding Door Roller features 1-1/8 inch concave steel ball bearing rollers housed in durable stamped steel with a yellow zinc finish for corrosion resistance. Designed for Milgard and other vinyl patio doors, it offers a precise fit with a 3/4 inch wide by 1 inch tall housing and a 1/4-20 threaded mounting hole. Easy to install with just a Phillips screwdriver, this roller assembly restores quiet, smooth sliding door operation and is backed by a 1-year warranty.

## Description

Replace or repair broken or missing sliding door rollers with the Prime-Line D 1791 1-1/8 inch unique back tandem roller assembly. Designed for Milgard and a variety of other vinyl patio doors, it features concave steel ball bearing rollers in a durable stamped steel housing with a golden finish. The housing measures 3/4 inch wide and 1 inch tall for secure installation. Ideal for DIY homeowners and contractors, this assembly restores smooth, quiet sliding operation. Installation requires only a Phillips head screwdriver.

Review: Does Not Come With Screws to Attach... - Like someone else mentioned already. These do not come with the screw to hold each one in place. And yes, typically that screw will be a different size than the old one in your door. Just something to know. Got these installed quickly otherwise and the quality is good. Door is in good shape now!
Review: Manpower needed to install - The most elusive part but once installed it fixed all our dragging problems

## Features

- Adjustable Tandem Roller Assembly: Designed for Milgard and other vinyl patio doors to ensure proper fit and functionality
- Smooth and Quiet Operation: Features 1-1/8 inch concave steel ball bearing rollers that provide reliable, noise-free sliding performance
- Durable Construction: Made with stamped steel housing in a yellow zinc finish for long-lasting corrosion resistance
- Precise Dimensions: Housing measures 3/4 inch wide and 1 inch tall with 1/4-20 threaded mounting hole on back (mounting screw not included)
- Compatibility Check Required: Please refer to the line art drawing for dimensions and compare to your needs before purchasing (Not Universal)
- Easy Installation: Requires only a Phillips head screwdriver for straightforward DIY installation and repair
- Replacement Solution: Restores smooth, quiet sliding operation to broken or worn sliding door mechanisms

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00A6G7PHO |
| Bearing Number | D 1791 |
| Bearing Type | Ball Bearing |
| Best Sellers Rank | #44,912 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #327 in Sliding Door Hardware #380 in Industrial Casters |
| Brand | PRIME-LINE |
| Brand Name | PRIME-LINE |
| Compatible Lubricant | Grease |
| Customer Reviews | 4.5 out of 5 stars 660 Reviews |
| Global Trade Identification Number | 00049793017918 |
| Included Components | Tandem Roller Assembly |
| Item Dimensions | 3.13 x 0.75 x 1 inches |
| Item Thickness | 0.75 inches |
| Item Type Name | Sliding Door Roller |
| Item Weight | 9.07 g |
| Item dimensions L x W x H | 3.13 x 0.75 x 1 inches |
| Manufacturer | Prime-Line Products |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model | D 1791 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Outside Diameter | 1.13 inches |
| Part Number | D 1791 |
| UPC | 049793017918 |
| Unit Count | 1 Count |
| Warranty Description | Goods are warranted against manufacturing defects for 1 year. |

## Product Details

- **Bearing Number:** D 1791
- **Brand:** PRIME-LINE
- **Item Weight:** 9.07 g
- **Item dimensions L x W x H:** 3.13 x 0.75 x 1 inches
- **Material:** Alloy Steel

## Images

![D 1791 Steel Sliding Door Roller, 1-1/8 in. Diameter - Image 1](https://m.media-amazon.com/images/I/71JRjp8j0mL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: where does this item ship from?**
A: If it comes from us, it's shipping from Kansas City, Missouri!

**Q: will these rollers work on Jeld-Wen vinyl sliding patio doors?**
A: There are many different profiles used for patio doors. Try to find the spec. drawings of the door and compare it with the drawings of the rollers to see if it fits.
Also possible is that the manufacturer of the door can help you with your choice. Sure thing is that the tandem rollers are far better than the single ones.

**Q: how to install D-1791 roller assembly**
A: First you turn the adjusting screw so the wheels retract all the way in the door. Now you lift the door up and out of track, get help it is heavy. Turn the adjusting screw so the wheels are as far out as possible so you have something to grab onto to pull out assembly. There is a screw that holds the roller in place just above the adjustment screw. Remove this screw and pull roller out. Reverse to install new roller. After you put door in place adjust so the door slides easy. When the door is out is a great time to clean the track. On my door there is no metal piece to remove as with Matt S.

**Q: I'm looking for a Disco screen door roller number 1189 or a D 1830**
A: Please review item D 1830 that is available.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does Not Come With Screws to Attach...
*by M***N on June 18, 2026*

Like someone else mentioned already. These do not come with the screw to hold each one in place. And yes, typically that screw will be a different size than the old one in your door. Just something to know. Got these installed quickly otherwise and the quality is good. Door is in good shape now!

### ⭐⭐⭐⭐⭐ Manpower needed to install
*by A***7 on July 4, 2026*

The most elusive part but once installed it fixed all our dragging problems

### ⭐⭐⭐⭐⭐ Amazing Product
*by M***W on April 8, 2026*

Amazing product worked very well, however, the screw used to attach the wheels to the door frame was much larger than the original screw, therefore I had to use a different screw. Otherwise worked very well!

## Frequently Bought Together

- Prime-Line D 1791 Steel Sliding Door Roller Tandem Assembly, 1-1/8 in. Diameter Roller, Steel Ball Bearing (Single Pack)
- Sliding Patio Door Tandem Roller Assembly,1-1/4 Inch Steel Ball Wheel Bearing, 2 Pack
- Prime-Line D 1735 Roller Assembly, 1-1/4 In. Tandem Wheels, Concave Edge, Ball Bearing (Single Pack)

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**Shop now:** [https://www.desertcart.co.za/products/9596826-d-1791-steel-sliding-door-roller-1-1-8-in](https://www.desertcart.co.za/products/9596826-d-1791-steel-sliding-door-roller-1-1-8-in)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-24*