When it comes to achieving a smooth, professional finish on your woodworking projects, a reliable random orbital sander is an essential tool. But even the best sanders need occasional maintenance and part replacement, such as the sanding pad. If you're a Craftsman user, you might be wondering about the Craftsman random orbital sander replacement pad. This guide will walk you through the process of identifying the right pad and replacing it, ensuring your sander continues to deliver excellent results.
Understanding Your Craftsman Random Orbital Sander
Before we dive into the replacement process, let's briefly discuss the Craftsman C21033 and C21035 random orbital sanders. Both models feature a 5-inch sanding pad, which is the industry standard for most random orbital sanders. They also share a similar design, making the replacement process identical for both.
Identifying the Right Replacement Pad
When it comes to replacing the sanding pad on your Craftsman random orbital sander, you'll want to ensure you're using a genuine Craftsman part or a high-quality aftermarket alternative. Here are some options to consider:

- Craftsman Genuine Replacement Pad (9-43640): This is the official replacement pad from Craftsman. It's designed to fit your sander perfectly and offers excellent performance.
- Milescraft 5-Inch Hook & Loop Sanding Pad (17910): This aftermarket pad is a popular alternative. It features a hook-and-loop system for easy sandpaper changes and is compatible with most 5-inch random orbital sanders, including Craftsman models.
Sanding Pad Compatibility
Before purchasing a replacement pad, double-check its compatibility with your Craftsman sander. While many 5-inch pads are universally compatible, some may have slight variations in design or size that could affect their fit. Always consult the manufacturer's specifications to ensure a proper fit.
Replacing the Sanding Pad on Your Craftsman Random Orbital Sander
Now that you've selected the appropriate replacement pad, let's walk through the process of installing it on your Craftsman random orbital sander.
Tools Needed
- New sanding pad
- Phillips screwdriver (for Craftsman genuine pad)
- Needle-nose pliers (for some aftermarket pads)
Replacement Steps
- Unplug your Craftsman random orbital sander from the power source to ensure safety during the replacement process.
- Remove the old sanding pad from the sander. For Craftsman genuine pads, use a Phillips screwdriver to remove the four screws securing the pad to the sander. For some aftermarket pads, you may need to use needle-nose pliers to remove retaining clips.
- Clean the mounting surface of the sander to remove any dust or debris that may have accumulated.
- Position the new sanding pad onto the mounting surface, ensuring it's properly aligned and secured. For Craftsman genuine pads, replace the screws and tighten them securely. For aftermarket pads, reattach any retaining clips or secure the pad according to the manufacturer's instructions.
- Plug in your Craftsman random orbital sander and test the new sanding pad by turning on the sander and checking that it spins freely and correctly.
Maintaining Your Craftsman Random Orbital Sander
Regular maintenance is key to ensuring the longevity and performance of your Craftsman random orbital sander. In addition to replacing the sanding pad when necessary, make sure to:

- Clean the sander regularly to remove dust and debris.
- Inspect the sandpaper before each use, replacing it when it becomes worn or clogged.
- Store your sander in a cool, dry place when not in use.
By following these maintenance tips and replacing the sanding pad as needed, you'll ensure your Craftsman random orbital sander continues to deliver exceptional results for years to come.