The Cumberland 185 184 190 7×10 8×10 Rotor Knife is a precision-ground rotor knife engineered as a drop-in OEM-spec replacement for Cumberland equipment. Manufactured to original-equipment tolerance and ground at our New England facility.

Specifications. Dimensions: 7×10 8×10. Material substitutions (M2, D2, A11, powder metal, tungsten carbide inlay) available on request — we’ll recommend the right steel based on your run hours and material hardness.

Cumberland OEM steel regrinds well past what most operations expect. Before you replace a Cumberland set, send it to us — we’ll tell you honestly whether you’ve got another regrind cycle of useful life left.

Already have this blade? We’ll regrind it. Most plants save 40–60% by regrinding existing blades instead of buying new — and most OEM steels still have life left long after operators assume they don’t. Send us your worn set and we’ll tell you honestly whether a regrind cycle still works.

Same-day pickup across New England — MA, NH, CT, RI, VT, ME. Custom dimensions, non-standard materials, and one-off retrofits welcome. Call 508-987-6800 or request a quote online. 25+ years of industrial blade service to OEMs, recyclers, packagers, paper mills, and food processors.