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RIDGID K-45AF sink machine autofeed drain cleaner for 3/4" to 1-1/2" lines, with 25' of 5/16" cable and variable speed control.
Categories : Tools & Hardware
SKU : WOR-TOO-730
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If you're clearing stubborn sink, tub, or shower drains, the RIDGID K-45AF (model 35473) is a reliable machine that puts you in control. Its two-way autofeed system advances and retrieves the cable at up to 20 feet per minute with the push of a lever, so you keep your hands and work area cleaner. The large, corrosion-resistant drum won't dent and is easy to clean, while the two-piece twist-lock canister lets you swap inner drums to match the cable to the job.
The advanced two-way autofeed feeds the cable forward or reverses to retrieve it. This steady, controlled action helps reduce cable kinking and makes the tool easier on the line. If your K-45 cable keeps kinking, check the autofeed tension and make sure you're using the right cable for the line diameter; proper technique will prevent most twisting and folding.
Rotate the cable 0–600 RPM in forward or reverse to work through soap scum, hair, and grease. The variable speed control lets you start slow and increase speed as the cutter bites in. This helps prevent cable snap-back and gives you a better feel through the line.
The K-45AF drum comes with 25 feet of 5/16-inch cable, ideal for 3/4-inch to 1-1/2-inch lines. The two-piece twist-lock canister allows quick cable changes, and you can step up to a full 50 feet of cable with the inner drum option to tackle longer runs.
If you're having autofeed issues or need to repair the feed mechanism, the K-45 is a straightforward machine to service. Check the drive chain, tension springs, and cable condition. Many common problems — like autofeed not gripping or cable not advancing — can be fixed by cleaning the drive and adjusting tension. Need parts? Search for RIDGID K-45 autofeed repair kits or contact us for guidance.
Two-way autofeed: advances and retrieves cable at 20 ft/min, keeps hands clean
Corrosion-resistant drum: won't dent, easy to clean
Variable speed control: 0-600 RPM forward/reverse for tough clogs
Twist-lock canister: quick cable changeovers to match the job
Drum: Corrosion-resistant, large capacity
Model: K-45AF (35473)
Speed: 0-600 RPM forward/reverse
Weight: 45 lb
Canister: Two-piece twist-lock, interchangeable inner drum
Cable Length: 25 ft
Product Type: Sink Drain Cleaning Machine
Autofeed Speed: Up to 20 ft/min
Cable Diameter: 5/16"
Line Compatibility: 3/4" - 1-1/2"
Seller: Workbench World
MPN: K-45AF (35473)
When a drain machine doesn't feed properly, it's usually a simple fix. Here's a quick list of common issues and what to check first.
Flush the drum and cable with clean water after each job. Wipe down the frame and keep the cable lightly lubricated. A clean machine is more reliable and lasts longer.
Kinking usually happens when the cable is twisted or the line is too small. Make sure the drum is free to turn and that you're using a cable suited for the drain size. Avoid forcing the cable into sharp turns; feed it slowly and use the autofeed at low speed.
Check the drive chain and tension adjustment. If the feed rollers are worn or dirty, clean or replace them. Search for RIDGID 35473 autofeed repair kits or contact us for troubleshooting guidance.
Yes, the twist-lock canister accepts interchangeable inner drums, allowing you to go from 25 ft up to 50 ft of 5/16" cable.
It's ideal for 3/4" to 1-1/2" lines, which covers most kitchen, bath, and laundry sink drains.
Works like a champ.
This machine is a lifesaver for our rental property. It cleared the kitchen sink in minutes. The autofeed is easy to control.
As a retired plumber, I've used many drain machines, and this K-45AF is a solid choice for residential work. The autofeed mechanism makes it easy to feed the cable without getting your hands dirty. It handles 3/4" to 1-1/2" lines well, and the variable speed lets you adjust to the job. The cable is 25 feet long, which handles most sink clogs. The unit is heavy, but it's built to last. The only thing I'd improve is the case, which is a bit bulky. But for the price, it's excellent.
Easy to use. The autofeed works as advertised. Cleared my bathtub drain quickly.
I'm not a plumber, but I've used this to clear drains in my house and at my mom's. It's straightforward to operate, and the autofeed saves you from yanking the cable manually. The variable speed helps when you hit a tough clog. It's kind of heavy to haul around, but I keep it in the garage. The instructions are clear, and it came ready to use. I've had it for a few months and it still works perfectly.
My husband uses this for his handyman business. He says it works great. It definitely beats snaking by hand.
This is the second one I've bought for our maintenance team. The first one lasted years. This one seems just as good. The autofeed is really smooth. The only issue is the cable can twist if you're not careful, but that's user error. I recommend it for any property manager.
