Claas® Spare Parts

Claas Jaguar knives, shearbar and other parts

Claas® is a registered trademark of Claas KGaA, mbH. We are experts when it comes to supplying OEM or aftermarket spare and wear parts for your harvester – over the entire lifetime, at the right time and with the right quality. Because th
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Claas Jaguar knives, shearbar and other parts

Claas® is a registered trademark of Claas KGaA, mbH. We are experts when it comes to supplying OEM or aftermarket spare and wear parts for your harvester – over the entire lifetime, at the right time and with the right quality. Because the right spare and wear parts are key elements for the availability and reliability of your Self-propelled forage harvester.

With the knowledge from our own technicians we have established part kits for your Claas® series 491, Claas® series 492, Claas® series 493, Claas® series 494, Claas® series 496, Claas® series 497 and Claas® series 498 self-propelled forage harvester.


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Claas® forage harvester Parts for sale

Claas Jaguar knives, shearbar and other parts

Claas® is a registered trademark of Claas KGaA, mbH. We are experts when it comes to supplying OEM or aftermarket spare and wear parts for your harvester – over the entire lifetime, at the right time and with the right quality. Because th
read more

Claas Jaguar knives, shearbar and other parts

Claas® is a registered trademark of Claas KGaA, mbH. We are experts when it comes to supplying OEM or aftermarket spare and wear parts for your harvester – over the entire lifetime, at the right time and with the right quality. Because the right spare and wear parts are key elements for the availability and reliability of your Self-propelled forage harvester.

With the knowledge from our own technicians we have established part kits for your Claas® series 491, Claas® series 492, Claas® series 493, Claas® series 494, Claas® series 496, Claas® series 497 and Claas® series 498 self-propelled forage harvester.


read less

22 Items

we ship all our products worldwide
  1. Upper front feedroller wear strip kit for Claas® series 492, 493 and 494
    Upper front feedroller wear strip kit for Claas® series 492, 493 and 494

    #CL0003

    €795,00 Excl. VAT and transportation.

    Upper front reedroller wear strip kit for Claas® series 492, 493 and 494

    Replaces OEM#: 00 0987 978 0

    Compatible models:

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    In stock
  2. Metal detector roller wear strip kit for Claas® series 494, 497, 498 and 502
    Metal detector roller wear strip kit for Claas® series 494, 497, 498 and 502

    #CL0018

    €595,00 Excl. VAT and transportation.

    Metal detector roller wear strip kit for Claas® series 494, 497, 498 and 502

    Replaces OEM#: 00 2601 151 0

    Compatible models:

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 497 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 498 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 502 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    In stock
  3. 100 teeth KP roller including bearing kit for Claas® series 492, 493 and 494
    100 teeth KP roller including bearing kit for Claas® series 492, 493 and 494

    #CL0010

    €2.230,00 Excl. VAT and transportation.

    100 teeth KP roller including bearing kit for Claas® series 492, 493 and 494

    Replaces OEM#: 00 0067 864 0, 00 0238 280 3

    Kernel Processors or Corn Cracker modules consist of two mill rolls with teeth pressed together by powerful springs, and are frequently used when harvesting cereal crops like corn and sorghum to crack the kernels of these plant heads. Kernel processors or Corn Crackers are installed between the cutterhead and accelerator. In most forage harvesters, the Kernel Processors or Corn Cracker can be quickly removed and replaced with a grass chute for chopping non-cereal crops. The length of the chopped forage is important, and corn kernels and stalk sections need to be cracked open otherwise they pass through the animal undigested.

    Compatible models:

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    In stock
  4. V-MAX 36 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502
    V-MAX 36 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502

    #CL0022

    €3.250,00 Excl. VAT and transportation.

    V-MAX 36 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502

    Replaces OEM#: 00 1410 170 1, 00 1410 171 1, 00 0495 274 2

    Compatible models:

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 497 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 498 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 502 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    In stock
  5. Chevron style MCC KP rollers + bearing kit installed for Claas® series 494, 497, 498 and 502
    Chevron style MCC KP rollers + bearing kit installed for Claas® series 494, 497, 498 and 502

    #CL0023

    €8.650,00 Excl. VAT and transportation.

    Chevron style MCC KP rollers + bearing kit installed for Claas® series 494, 497, 498 and 502

    Replaces OEM#: 00 0130 549 2, 00 0130 597 2, 00 0217 654 1

    Kernel Processors or Corn Cracker modules consist of two mill rolls with teeth pressed together by powerful springs, and are frequently used when harvesting cereal crops like corn and sorghum to crack the kernels of these plant heads. Kernel processors or Corn Crackers are installed between the cutterhead and accelerator. In most forage harvesters, the Kernel Processors or Corn Cracker can be quickly removed and replaced with a grass chute for chopping non-cereal crops. The length of the chopped forage is important, and corn kernels and stalk sections need to be cracked open otherwise they pass through the animal undigested.

    Compatible models:

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 497 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 498 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 502 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

     

    In stock
  6. V-MAX 24 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502
    V-MAX 24 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502

    #CL0020

    €2.250,00 Excl. VAT and transportation.

    V-MAX 24 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502

    Replaces OEM#: 00 1410 170 1, 00 1410 171 1, 00 0495 274 2

    Compatible models:

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 497 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 498 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 502 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

     

    In stock
  7. Blower wear parts kit for Claas® series 491, 492 and 493
    Blower wear parts kit for Claas® series 491, 492 and 493

    #CL0013

    €325,00 Excl. VAT and transportation.

    Blower wear parts kit for Claas® series 491, 492 and 493

    Replaces OEM#: 00 0076 202 4, 00 0076 208 2, 00 0076 391 1, 00 0076 392 1

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    In stock
  8. Set of 12 universal knives + shearbar for Claas® series 491, 492, 493 and 496
    Set of 12 universal knives + shearbar for Claas® series 491, 492, 493 and 496

    #CL0006

    €931,00 Excl. VAT and transportation.

    Set of 12 universal knives + shearbar for Claas® series 491, 492, 493 and 496

    Replaces OEM#: 00 0998 101 0, 00 0998 102 0, 00 0495 273 2

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 496 Series:
    Claas® Jaguar 840, Claas® Jaguar 850, Claas® Jaguar 860, Claas® Jaguar 870, Claas® Jaguar 880.

    In stock
  9. Smooth roller scraper for Claas® series 494, 497, 498 and 502
    Smooth roller scraper for Claas® series 494, 497, 498 and 502

    #CL0019

    €348,00 Excl. VAT and transportation.

    Smooth roller scraper for Claas® series 494, 497, 498 and 502

    Replaces OEM#: 00 0131 879 0

    Compatible models:

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 497 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 498 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 502 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

     

    In stock
  10. Set of 20 Corn knives + shearbar for Claas® series 491, 492, 493 and 496
    Set of 20 Corn knives + shearbar for Claas® series 491, 492, 493 and 496

    #CL0007

    €1.235,00 Excl. VAT and transportation.

    Set of 20 Corn knives + shearbar for Claas® series 491, 492, 493 and 496

    Replaces OEM#: 00 0998 103 0, 00 0998 104 0, 00 0495 274 2

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 496 Series:
    Claas® Jaguar 840, Claas® Jaguar 850, Claas® Jaguar 860, Claas® Jaguar 870, Claas® Jaguar 880.

     

    In stock
  11. 80 teeth KP roller including bearing kit for Claas® series 491
    80 teeth KP roller including bearing kit for Claas® series 491

    #CL0009

    €2.145,00 Excl. VAT and transportation.

    80 teeth KP roller including bearing kit for Claas® series 491

    Replaces OEM#: 00 0078 375 0, 00 0238 280 3

    Kernel Processors or Corn Cracker modules consist of two mill rolls with teeth pressed together by powerful springs, and are frequently used when harvesting cereal crops like corn and sorghum to crack the kernels of these plant heads. Kernel processors or Corn Crackers are installed between the cutterhead and accelerator. In most forage harvesters, the Kernel Processors or Corn Cracker can be quickly removed and replaced with a grass chute for chopping non-cereal crops. The length of the chopped forage is important, and corn kernels and stalk sections need to be cracked open otherwise they pass through the animal undigested.

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    In stock
  12. Chevron style KP rollers including bearings and pulley for Claas® series 492
    Chevron style KP rollers including bearings and pulley for Claas® series 492

    #CL0011

    €5.250,00 Excl. VAT and transportation.

    Chevron style KP rollers including bearings and pulley for Claas® series 492

    Replaces OEM#: 00 0067 864 0, 00 0238 280 3

    Kernel Processors or Corn Cracker modules consist of two mill rolls with teeth pressed together by powerful springs, and are frequently used when harvesting cereal crops like corn and sorghum to crack the kernels of these plant heads. Kernel processors or Corn Crackers are installed between the cutterhead and accelerator. In most forage harvesters, the Kernel Processors or Corn Cracker can be quickly removed and replaced with a grass chute for chopping non-cereal crops. The length of the chopped forage is important, and corn kernels and stalk sections need to be cracked open otherwise they pass through the animal undigested.

    Compatible models:

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    In stock
  13. Set of 10 universal knives + shearbar for Claas® series 491, 492, 493 and 496
    Set of 10 universal knives + shearbar for Claas® series 491, 492, 493 and 496

    #CL0005

    €855,00 Excl. VAT and transportation.

    Set of 10 universal knives + shearbar for Claas® series 491, 492, 493 and 496

    Replaces OEM#: 00 0998 101 0, 00 0998 102 0, 00 0495 273 2

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 496 Series:
    Claas® Jaguar 840, Claas® Jaguar 850, Claas® Jaguar 860, Claas® Jaguar 870, Claas® Jaguar 880.

     

    In stock
  14. Metal detector roller wear strip kit for Claas® series 492
    Metal detector roller wear strip kit for Claas® series 492

    #CL0001

    €595,00 Excl. VAT and transportation.

    Metal detector roller wear strip kit for Claas® series 492

    Replaces OEM#: 00 0986 267 1

    Compatible models:

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    In stock
  15. V-MAX 28 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502
    V-MAX 28 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502

    #CL0021

    €2.550,00 Excl. VAT and transportation.

    V-MAX 28 Corn knives including shearbar kit for Claas® series 494, 497, 498 and 502

    Replaces OEM#: 00 1410 170 1, 00 1410 171 1, 00 0495 274 2

    Compatible models:

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 497 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 498 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 502 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

     

    In stock
  16. Set of 24 Corn knives + shearbar for Claas® series 491, 492, 493 and 496
    Set of 24 Corn knives + shearbar for Claas® series 491, 492, 493 and 496

    #CL0008

    €1.395,00 Excl. VAT and transportation.

    Set of 24 Corn knives + shearbar for Claas® series 491, 492, 493 and 496

    Replaces OEM#: 00 0998 103 0, 00 0998 104 0, 00 0495 274 2

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 496 Series:
    Claas® Jaguar 840, Claas® Jaguar 850, Claas® Jaguar 860, Claas® Jaguar 870, Claas® Jaguar 880.

     

    In stock
  17. Upper front feedroller wear strip kit for Claas® series 491
    Upper front feedroller wear strip kit for Claas® series 491

    #CL0002

    €450,00 Excl. VAT and transportation.

    Upper front reedroller wear strip kit for Claas® series 491

    Replaces OEM#: 00 0986 257 1

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    In stock
  18. Blower paddle kit for Claas® series 491, 492 and 493
    Blower paddle kit for Claas® series 491, 492 and 493

    #CL0012

    €225,00 Excl. VAT and transportation.

    Blower paddle kit for Claas® series 491, 492 and 493

    Replaces OEM#: 00 0078 181 0

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    In stock
  19. Blower wear parts kit for Claas® series 494, 497, 498 and 502
    Blower wear parts kit for Claas® series 494, 497, 498 and 502

    #CL0024

    €375,00 Excl. VAT and transportation.

    Blower wear parts kit for Claas® series 494, 497, 498 and 502

    Replaces OEM#: 00 0141 700 1, 00 0076 208 2, 00 0076 391 1, 00 0076 392 1

    Compatible models:

    Claas® 494 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 497 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 498 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

    Claas® 502 Series:
    Claas® Jaguar 930, Claas® Jaguar 940, Claas® Jaguar 950, Claas® Jaguar 960, Claas® Jaguar 970, Claas® Jaguar 980.

     

    In stock
  20. Smooth roller scraper slottered hole for Claas® series 491, 492, 493 and 496
    Smooth roller scraper slottered hole for Claas® series 491, 492, 493 and 496

    #CL0004

    €268,00 Excl. VAT and transportation.

    Smooth roller scraper slottered hole for Claas® series 491, 492, 493 and 496

    Replaces OEM#: 00 0984 339 5

    Compatible models:

    Claas® 491 Series:
    Claas® Jaguar 820, Claas® Jaguar 840, Claas® Jaguar 860, Claas® Jaguar 880.

    Claas® 492 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 493 Series:
    Claas® Jaguar 830, Claas® Jaguar 850, Claas® Jaguar 870, Claas® Jaguar 890, Claas® Jaguar 900.

    Claas® 496 Series:
    Claas® Jaguar 840, Claas® Jaguar 850, Claas® Jaguar 860, Claas® Jaguar 870, Claas® Jaguar 880.

    In stock

 

V-Classic chopping cylinder or Chevron-shaped knife

The Claas® Jaguar has the V-Classic chopping cylinder, also called Chevron-shaped knife layout, are available in 3 version:

 

  1.  V-Classic 28, 14 left and 14 right, chop lengths 3.5 - 30 mm
  2. V-Classic 24, 12 left and 12 right, chop lengths 4.5 - 34 mm
  3. V-Classic 20, 10 left and 10 right, chop length 5.0 - 42 mm


The effectiveness of the 750 mm wide chopping cylinder in the JAGUAR is unique. The chevron-shaped knife arrangement produces a pull-through, guillotine cut with minimum effort. At the same time, the forage is guided towards the middle – this reduces wear and friction losses on the sides of the drum housing.