UNTHA® KNIVES & SPARE PARTS (EU SUPPLY GUIDE)
This technical guide summarizes real compatible UNTHA ® parts listed in our Eurotools catalogue, including item numbers, typical configurations, and selection guidance.
Overview of UNTHA Shredding Technology
UNTHA shredders are widely used in industrial recycling applications including:
- municipal solid waste (MSW)
- plastics recycling
- waste wood processing
- metal scrap pre-processing
- RDF and SRF production
These machines use different cutting system architectures, depending on the series:
- RS series – four-shaft shredders
- XR series – single-shaft slow-speed shredders
- LR series – wood and waste shredders
- VR series – single-shaft shredders for bulky waste
Each system relies on precisely matched cutting tools and wear components that determine shredding efficiency, particle size control and machine reliability.
Item number: 7135
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AvailabilityIn Stock: 5
Availability: 8 weeks
D310x28,8 mm Chopping disk, Pos. 1, for Untha RS 50
Item number: 18495
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AvailabilityFor production
Availability: 8 weeks
490x210x60 mm Counter knife middle for Untha XR2000 OEM
Item number: 41
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AvailabilityIn Stock: 901
Availability: 6 weeks
212x70x28 mm Rotor knife for Untha XR3000C, OEM
Item number: 8990.01
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AvailabilityFor production
Availability: 5 weeks
1173x726,5x462x12 mm Screen for Untha CR/XR, HEX 30 mm CE
Item number: 16192
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AvailabilityFor production
Availability: 6 weeks
1225x1162x15 mm Screen for Untha ® RS100-1200 D40 S10 R195
Item number: 9502
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AvailabilityIn Stock: 4
Availability: Usually on stock or 1 week
M24x150 mm Hex head screw for Untha / Lindner
Item number: 18677
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AvailabilityIn Stock: 307
Availability: 8 weeks
40x40x20 mm Knife for Untha VR 140
Item number: 13267
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AvailabilityFor production
Availability: 8 weeks
148,5x72x57 mm Knife holder for Untha VR 140 V3!!!
Item number: 192
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AvailabilityIn Stock: 1
Availability: 10 weeks
80x45 mm Knife holder for Untha LR
Item number: 12557
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AvailabilityIn Stock: 64
Availability: 10 weeks
65x56x41,5 mm Knife pusher for UNTHA
Item number: 14462
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AvailabilityFor production
Availability: 10 weeks
Set of parts for Untha ® RS100 100-1200 cutting plan: 10571700
30.342,30 €
30.342,30 €
Item number: 19234
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AvailabilityIn Stock: 103
Availability: 8 weeks
34x34x23,8 mm Knife for Untha LR
Item number: 14635
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AvailabilityFor production
Availability: 10 weeks
Set of parts for Untha ® RS40 960 cutting plan 11254600
19.719,80 €
19.719,80 €
Item number: 137
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AvailabilityFor production
Availability: 6 weeks
D310x43,3/28,4 mm broaching disk, Pos. 3A, for Untha RS60
Item number: 75.02
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AvailabilityFor production
Availability: 8 weeks
110x110x56 mm Rotor knife for Untha XR CE type 2
D310x28,8 mm Chopping disk, Pos. 1, for Untha RS 50
490x210x60 mm Counter knife middle for Untha XR2000 OEM
212x70x28 mm Rotor knife for Untha XR3000C, OEM
1173x726,5x462x12 mm Screen for Untha CR/XR, HEX 30 mm CE
1225x1162x15 mm Screen for Untha ® RS100-1200 D40 S10 R195
M24x150 mm Hex head screw for Untha / Lindner
40x40x20 mm Knife for Untha VR 140
148,5x72x57 mm Knife holder for Untha VR 140 V3!!!
80x45 mm Knife holder for Untha LR
65x56x41,5 mm Knife pusher for UNTHA
Set of parts for Untha ® RS100 100-1200 cutting plan: 10571700
34x34x23,8 mm Knife for Untha LR
Set of parts for Untha ® RS40 960 cutting plan 11254600
D310x43,3/28,4 mm broaching disk, Pos. 3A, for Untha RS60
110x110x56 mm Rotor knife for Untha XR CE type 2
Critical Wear Parts in UNTHA Shredders
Industrial shredders rely on replaceable wear components designed to withstand abrasion, impact loads and continuous operation.
The most important components include:
- rotor knives
- stator knives
- counter knives
- knife holders
- screens
- fastening elements
Eurotools supplies compatible components for multiple UNTHA models, including XR, RS, LR and VR machines.
Rotor Knives
Rotor knives are the primary cutting elements mounted on the shredding rotor.
Typical functions:
- primary size reduction of material
- maintaining cutting geometry
- stabilizing rotor load distribution
- controlling output particle size
Example configurations include rotor knives used in XR and LR shredders with dimensions such as:
These knife geometries are designed to match specific shredding systems.
Stator Knives and Counter Knives
Stator knives provide the fixed cutting edge against which rotor knives shear material.
Key functions:
- creating a scissor-type cutting action
- stabilizing material flow
- controlling particle size
- protecting internal machine structures
Counter knives are typically hardened wear parts that must maintain precise alignment with rotor knives.
Knife Holders and Mounting Systems
Knife holders and pushers ensure correct positioning of cutting tools on the rotor.
Common components include:
- rotor knife holders
- knife pushers
- alignment pins
- locking screws
- hardened washers
These components maintain cutting geometry stability during high torque operation.
Screens and Sizing Systems
Screens define the final particle size of shredded material.
Typical roles:
- controlling output fraction size
- stabilizing downstream processing
- preventing oversize discharge
- improving shredding efficiency
Screen geometry varies depending on application:
- RDF production
- wood recycling
- plastics shredding
- tyre processing
Materials Used in UNTHA Wear Parts
Wear components for shredders are typically produced from:
- high-alloy tool steels
- wear-resistant steels
- chromium-molybdenum alloys
- carbide-reinforced materials
These materials must provide a balance between:
- hardness (wear resistance)
- toughness (impact resistance)
- dimensional stability
- resistance to chipping
Wear Mechanisms in Industrial Shredders
Typical wear mechanisms in UNTHA shredders include:
Abrasive wear
Caused by:
- mineral contamination
- soil particles
- glass or ceramics
Impact fatigue
Resulting from:
- metal contaminants
- dense materials
- uneven feed loads
Edge rounding
Occurs during long shredding cycles and reduces cutting efficiency.
Monitoring wear patterns allows operators to optimize maintenance intervals.
Maintenance Strategy for UNTHA Cutting Systems
Recommended maintenance procedures include:
- regular inspection of rotor knives
- checking counter knife alignment
- monitoring rotor vibration
- replacing worn screens
- inspecting knife holders and bolts
Operating with worn knives can increase:
- energy consumption
- rotor imbalance
- bearing load
- machine downtime
Common UNTHA Spare Parts Available from Eurotools
Typical spare parts supplied include:
- rotor knives
- stator knives
- counter knives
- knife holders
- knife pushers
- rotor bolts and washers
- screens
- chopping discs
Eurotools maintains stock of frequently used wear parts to support industrial recycling operations.
Availability and EU Logistics Supply
Typical supply advantages include:
- stock availability of common wear parts
- fast EU shipping
- predictable maintenance supply cycles
- support for recycling plant maintenance
Large spare parts inventories help reduce downtime caused by missing components
How to Select the Correct UNTHA Knife Configuration
Selection depends on several parameters:
- shredder model
- rotor configuration
- processed material
- contamination level
- required particle size
Correct knife geometry ensures:
- stable shredding performance
- lower energy consumption
- longer wear life
How to Request Correct UNTHA Spare Parts
Please provide:
- machine model
- OEM reference numbers
- knife dimensions
- processed material
- required quantities
- photos or drawings
This allows accurate identification of compatible components.
👉 REQUEST A QUOTATION – UNTHA ® Spare Parts
Need pricing, availability, or technical advice?
Send us your request and our technical team will prepare a quotation for compatible Untha shredder wear parts.
