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Crop flow.


Crop flow.

Crop flow. Committed to productivity.

Time is money and we at CLAAS know you expect the highest possible productivity from your combine, so we are committed to bringing you just that. From the moment the crop flows into the feederhouse and into the APS straw walker system, to the moment the clean grain hits the grain tank and residue is spread, we offer more capacity, more performance and more efficiency.


HP feederhouse.

The HP feederhouse is designed for all crops and features an extra wide channel (same as the threshing system) with a shallow angle that provides a smooth, gentle transition for the crop into the APS threshing system.


  • Hydraulic top-link fore/aft header pitch adjustment with 19 degrees of fore/aft pitch control from the cab
  • Heavy-duty 4-chain, 3-slat conveyor provides reliable transfer of the crop through the feederhouse
  • Adjustable front drum
  • Closed front drum adds protection against rocks and foreign debris
In-cab convenience features:
  • Automatic ground speed control with CEMOS CRUISE PILOT based on losses and throughput
  • Automatic overload prevention with CEMOS AUTO CROP FLOW
  • Automatic soft start system
  • Automatic terrain compensation with AUTO CONTOUR
  • Feederhouse reverse
  • Feederhouse break activation located on the multifunction control lever
  • Header pitch adjustment with HP feederhouse
  • Up to four programmable header heights

Threshing and separation.

APS straw walker system.

The APS straw walker system on the LEXION 600 Series uses the same high capacity APS threshing technology as the LEXION 700 Series. The APS threshing system allows the LEXION 670 to excel in capacity due to the reduced amount of grain needing to be separated by the straw walkers compared to competitive straw walker combines.


  • Synchronized tri-cylinder threshing system
  • 24 in (600 mm) rasp bar threshing cylinder
  • Interchangeable APS grates
  • Parallel concave adjustment with overload protection
  • Lever-operated dis-awning plates
  • Six straw walkers, 14.4 ft (4,400 mm) long
  • Four steps per walker
  • Fish-back riser and extensions
  • Large perforated walker floor
  • Returns channel attached to each walker

In-cab convenience features:
  • Automatic threshing cylinder speed and concave adjustment with CEMOS AUTO THRESHING
  • Automatic overload prevention with CEMOS AUTO CROP FLOW
  • Automatic ground speed control with CEMOS CRUISE PILOT based on losses and throughput

Cleaning system.

Standard cleaning.

The standard cleaning fan has three fan housings, each fitted with dual fans that blow through an upper and lower channel for strategic wind placement into the cleaning area.


  • Cascade pre-cleaner
  • Extra long upper sieve area
  • High performance turbine fans
  • Grain loss sensors angled inward to retain the grain passing beyond the upper sieve
In-cab convenience features:
  • Automatic fan speed and lower/upper sieve adjustment with CEMOS AUTO CLEANING 
  • Automatic fan speed adjustment with CEMOS AUTO SLOPE
  • Automatic sidehill compensation with CEMOS 4D-cleaning
  • Automatic MOG and broken grain monitoring with GRAIN QUALITY CAMERA
  • Loss sensitivity adjustment
  • Ratio of grain to MOG measurement with GRAINMETER
  • Return volume monitor
  • Clean-out function

Grain handling.

Grain tank and unloading.

All LEXION combines are equipped standard with power-folding bin extensions. Constructed of steel, the extensions are controlled hydraulically from the cab and raise and lower rapidly to avoid any downtime. Unloading the LEXION grain tank is fast and efficient with its heavy-duty drive. The #80 O-ring sealed chain increases the service interval for greater uptime and longer chain life.


  • 385 bu (13,500 l) to 300 bu (10,600 l) grain tank
  • Large grain tank window
  • Illuminated grain tank window
  • Inspection port for grain samples
  • Self-tensioning clean grain elevator chain
  • Adjustable cross auger covers
  • Easy clean-out between crops
  • 3.8 bu/sec (130 l/s) to 3.3 bu/sec (110 l/sec) unloading capacity
  • 2.8 bu/sec (90 l/s) on rice model
  • Unloading auger camera (PROFI CAM)
In-cab convenience features:
  • Grain tank fill level monitor
  • Grain tank distance to full monitor
  • Grain tank light
  • Grain tank 70 percent and 100 percent full beacon
  • Power-folding bin extensions
  • Yield and grain moisture monitoring with QUANTIMETER
  • In-field grain logistics available with FLEET VIEW

LEXION model670TT/670
Grain tank capacity (bu/l)330/11,500
Unloading rate (bu/l sec)3.8/130


Residue management.

Residue management systems.

CLAAS offers four residue management systems with almost endless options and conveniences to fit all your residue management needs: PRO CHOP, TURBO CHOP, Standard Chopper, and Straw Spreaders.

In-cab convenience features:

  • Stationary knife and friction floor engagement
  • Spreading/windrowing adjustment
  • Spread width adjustment
  • Spread direction adjustment
  • Overlap adjustment
  • Automatic side-wind/slope compensation
  • Tailboard working and transport position

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