Tri-Deck Roller Finishing Mower

1/2" to 4"
25 to 40


Progressive’s 12 foot Tri-Deck Roller Mower (TDR-12) is designed to maintain wide area mowing venues that require a superlative after cut appearance. The superior quality of cut, coupled with the TDR-12’s rugged construction, ease of maintenance and use give the TDR-12 the versatility to tackle a wide variety of mowing applications in parks, sports fields, and corporate campuses. The TDR-12’s full length rollers, which allow the mower to cut as low as ½” while simultaneously rolling and striping the mowing surface. Higher mowing speeds are often possible as the bounce from pneumatic tires are eliminated, making quick work of big jobs. Cutting heights are quick and simple to set with the supplied tool to any height from ½” to 4”. The TDR-12 is another example of the ingenuity and quality that goes into producing a durable, reliable rotary finishing mower that is easy to maintain. The TDR-12 is not only a Value and Performance leader, it is “The Better Built Choice”



  • Pro Lift-N-Turn™:

    An industry exclusive feature – not found on other contour mowers! Pro Lift-N turn™ allows the decks to be raised slightly off the ground with the PTO still engaged. Crossing a cart path or other minor obstacles has never been easier.

  • Superior Cut Quality and Striping:

    TDR-12’s high tip speed blades provide superior cut quality while heavy duty rollers produce bold recognizable stripes.

  • Worry Free Maintenance:

    Maintenance free blade spindles, and PTO Shafts requiring lengthy intervals between greasing, reduces maintenance but provides you with the same reassurance of performing daily maintenance.

  • PTO Connection:

    The Constant Velocity (CV) input PTO and auto-lock PTO coupler makes connecting the mower to a tractor easier while providing extra protection to the driveline by minimizing vibration when turning.


Part Number:528712B
Recommended PTO H.P.:25 to 40
Mowing Capacity: * (Assumes no overlap or turning)2 mph 2.9 acres per hour *
4 mph 5.8 acres per hour *
6 mph 8.7 acres per hour *
Cut Height Range:1/2" to 4"
Cutting Width:12'
Turning Radius:24" uncut circle
Transport Width:7'
Transport Tires:P275 / 60 R15 automotive tires
Transport Height:7' 6"
Weight:3400 lbs
Transport Length:14'
Std. Equipment:
  • Heavy-duty construction, open rear-discharge, easy cutting height adjustment.
  • Heavy-duty 6” dia. rollers supported by 2 - 1.25” ductile flange bearings.
  • Maintenance free blade spindle assemblies for reduced maintenance.
  • High lift blades for superior cut.
  • All decks turn the same direction for control of discharge
  • Blade tip speed 18,287 FPM.
  • Transport tires: P275/60 SR15.
  • CV input shaft system for easy connection to any tractor
Opt. Equipment:
  • 528153 Fender kit (both sides), with provision to mount lights
  • 522604 High Lift Blade Kit (replacement set of 7 fixed, black left-hand blades)
Disclaimer: Under our policy of continuous improvement, we reserve the right to change specifications and designs without prior notice. The illustrations shown do not necessarily represent the standard version of product offered by Progressive Turf Equipment Inc.

Pro Lift-N-Turn™
Progressive’s exclusive Pro Lift-N-Turn™ system is standard equipment. Operators have the ability to slightly raise the decks off the ground with the PTO still engaged, making turning easier on the turf as the weight of the mower is distributed between the tractor and the floatation tires. An automatic stop prevents the main decks from rising too far.




High Blade Tip Speed
With a tip speed over 18,000 feet per minute, Progressive’s high lift blades provide superior airflow, to stand grass up to be cleanly cut and evenly discharged over the rear rollers, while minimizing clumping and accumulation.
Progressive’s high tip speed provides a clean even cut at ground speeds up to 6 miles per hour, for the high productivity users have come to appreciate form a Progressive mower.

The seven – 23” heat treated high lift blades produces the proper amount volume allowing grass to be stood up for precise cut quality and even clipping disbursement. Equipped on the front and back of each of the 3 – independently side to side and front to back floating decks, are 6” diameter solid full-length rollers that yield highly defined long-lasting striping pattern.




Easy change height adjustment
Infinite cutting height adjustment from ½” to 4″ is easily accomplished with the on board tool. This allows the TDR-12 to transition quickly for multiple mowing height applications.






Maintenance Free Blade Spindles
Several years ago, Progressive introduced maintenance free blade spindle assemblies, and based on their success and acceptance, we’ve incorporated them as standard equipment in the TDR-12. Developed and tested over many years, the sealed bearings we use have a unique steel seal located on the bottom and the top of the spindle so that it is designed to keep lubrication in and contaminates out(seen HERE), providing superior bearing life in demanding natural grass production conditions. The bearing kit is interchangeable with our conventional greased bearings, so older spindles can be upgraded. Maintenance free blade spindles not only protect the owner’s investment from a missed service, they also reduce routine maintenance time and cost. More time for mowing is what it’s all about!




C.V. input PTO system
Often mowers of this size are moved between tractors that are equipped with different size tires. This created additional work when the mower was connected as either the mower or the tractor’s drawbar has to be adjusted to achieve the proper drive line positioning. To overcome this Progressive equipped the TDR-12 with a constant velocity (CV) input PTO as standard equipment. This makes connection to a tractor easier as the drawbar hitch length does not need to be adjusted each time to suit the mower (within reason). With the standard CV joint, it is much easier for the TDR-12 to be connected to different tractors as adjusting the drawbar to correct minor misalignment isn’t as critical. Overall hook-up time is greatly reduced. Let’s go mowing!