The Cadillac of Conveyor Beltslitters

We manufacture Beltslitters and GSE Airplane Heaters

Our New and Improved Coldbuster

The Calista Mark IV-900 is now fully automated and built with a wider body for smoother towing and better maneuverability. Plus, its improved access and extra space make maintenance quick and effortless.

View Calista Mark IV-900

Handcrafted beltslitters

The cadillac of conveyor beltslitters. The industry's most powerful, durable, and cost-effective machine for cutting all types of conveyor belts.

Airplane heaters

Our superior heaters are a blend of high-quality components and dedicated manufacturing processes - they consistently outlast and outperform the competition.

Skive tools

Hose skiving tools are globally recognized, patented tools for quickly and cleanly skiving many types of hydraulic hose. Developed with ease of operator use in mind, they're tough and inexpensive hand tools for your growing hydraulic service business.

Custom Services

One of the best reasons to be a full-service products company is that we can offer our customers more than just products. Our experience and facility make it easy to offer special services like painting, assembly, and design for your critical project.

Custom Painting - Our facility includes a full-featured, environmentally-friendly certified paint spray booth.
Assembly Services - At Spencer Manufacturing, our main goal is to build our proprietary products for sale to our industrial customers.
Custom Design - We can custom design products to meet your needs. This new service extends our painting and assembly services and can help enhance existing products or help build new ones for you.

Check out our brand new location

Located conveniently between Portland and Seattle in Thurston county, with 50% more manufacturing space.

"Their machines are outstanding - true workhorses that have stood the test of time. What truly sets them apart, however, is their service."

Lucas Burggraf

Plant Manager at Mulhurn Belting

"Spencer slitters are extremely reliable and user friendly. Buying Spencer slitters was one of the best decisions I ever made in my belting career."

Drago Gorupic

Industrial Rubber Specialties, Inc.

"If you want the best slitter money can buy, look no further. Spencer is a top-notch slitter with great support."

Dan Baird

Splawn Belting

"If you are seeking a partner to supply custom belt slitters that are engineered well, built to last, and backed by knowledgeable, attentive support, I wholeheartedly recommend Spencer Manufacturing."

Jackie Robb Britt

CEO, Rubber & Accessories, Inc.

"Nothing compares to the Spencer beltslitters. The service and support we get from Spencer is incredible. Spencer truly is the Cadillac of slitters."

Dan Kirby

Sutter Buttes Rubber Company

"The slitter controls turned out to be intuitive and the machine easy to operate. The service that we received after the sale was also impressive."

Michael Smalley

Branch Operations Manager, LGG Industrial