34 × 34 × 20 mm E-type square rotor knife for Virtus Equipment and ZERMA America ZSS, ZIS, ZWS, ZRS, and ZBS series shredders. This high-volume rotor knife is designed for low-speed, high-torque shredding operation and works in opposition with the stationary stator knives to reduce plastic, wood, and mixed waste materials. Manufactured from D2 tool steel (1.2379) heat-treated to 58–62 HRC for exceptional wear resistance. Machines require 26 to 144+ knives depending on model — replace as a complete set for consistent performance.
The E-Type Square Rotor Knife 34 × 34 × 20 is the primary rotor cutting component for Virtus Equipment and ZERMA America ZSS, ZIS, ZWS, ZRS, and ZBS series shredders. The distinctive E-type square profile mounts across the full width of the shredder rotor, with each knife providing a cutting edge that works in close opposition with the stationary stator knives to shred and reduce plastic parts, production waste, wood, and mixed materials at low rotor speeds with high cutting torque.
| Weight | 1 lbs |
|---|---|
| Dimensions | 2 × 2 × 2 in |
SKU: 80001003
Dimensions: 34 × 34 × 20 mm
Knife Type: E-Type Square Rotor Knife
Material: D2 Tool Steel (1.2379)
Hardness: 58–62 HRC
Rotor Type: E-Type (square profile)
Knife Quantity by Model: ZBS 600: 26 | ZWS 600: 13–26 | ZSS/ZRS 850: 40–60 | ZSS 1200/ZIS 1200: 54–81 | ZSS 1500/ZIS 1500: 68–102 | ZSS 2000/ZIS 2000: 96–144
Applications: Plastic size reduction, wood shredding, mixed waste processing, production waste recycling
Related Parts: ZSS/ZIS/ZWS/ZRS/ZBS Stator Knife 279 × 80 × 30 — SKU: 80001202
E-Type Square Profile: The 34 × 34 mm square face design allows the knife to be rotated when one cutting edge wears, extending total service life before full replacement is required.
High-Torque Shredding Design: Engineered for the low-speed, high-torque cutting action of the ZSS/ZIS/ZWS/ZRS/ZBS shredder series — delivering reliable size reduction of tough plastic, wood, and mixed waste materials.
D2 Tool Steel Construction: Manufactured from premium 1.2379 high-carbon tool steel heat-treated to 58–62 HRC for outstanding wear resistance, edge retention, and extended service intervals.
50+ Years of Manufacturing Expertise: Produced by a manufacturer with over 50 years of combined steel production and knife manufacturing experience for unmatched consistency and quality.
High Knife Quantity per Machine: ZSS/ZIS/ZWS/ZRS/ZBS series machines require 26 to 144+ rotor knives per machine depending on model — contact us for volume pricing.
Direct OEM Replacement: Precision-machined to original equipment specifications for guaranteed fitment and performance across all compatible machine models.
The square 34 × 34 mm face profile is a key advantage of the E-type design — as one cutting edge wears, the knife can be rotated to present a fresh edge, maximizing the total usable service life of each knife before replacement is required. The ZSS/ZIS/ZWS/ZRS/ZBS series machines are high-capacity shredders that require significant knife quantities per machine — from 26 knives on the ZBS 600 up to 144+ knives on the ZSS/ZIS 2000 series — making knife quality and consistent metallurgical performance critical to total cost of ownership.
All Virtus Equipment Direct knives are manufactured from premium D2 tool steel (DIN 1.2379) with specialized heat treatment to 58–62 HRC, delivering outstanding wear and abrasion resistance in continuous industrial shredding environments. Our knives are produced by a manufacturer with over 50 years of combined steel production and knife manufacturing experience, ensuring consistent metallurgical quality and reliable performance across every knife we supply.
CompatibilityZSS 850, ZSS 850+, ZSS 1200, ZSS 1500, ZSS 2000 | ZIS 1200, ZIS 1500, ZIS 2000 | ZWS 600, ZWS 800, ZWS 1100, ZWS 1400, ZWS 1700, ZWS 2000 | ZRS 850, ZRS 1000, ZRS 1500 | ZBS 600, ZBS 850 — Virtus Equipment & ZERMA America
