McConnel’s largest and most productive mower, the SR820’s fast cutting action and 8.2m working width enables operators to tackle as much as eight hectares an hour - making it one of the most productive mainstream rotary mowers on the market.

Ideal for large-scale farmers, local government teams, and professional mowing contractors, SR series machines can be used in a huge variety of applications from airports and sports venues to pasture and stubble. Despite its size it is highly manoeuvrable and folds easily to a safe transport width of just 2.8m.


The SR820 is designed for productivity with five high-performance rotors and a choice of 10, 15, 20 or 30 hardened updraft swinging blades that enable it to tackle material up to 50mm thick.

Reliability is enhanced by a six gearbox driveline, each with built-in slip clutch protection, ensuring the power is spread evenly across the cutting width. This feature also enables an even cut and spread and an attractive finish.

McConnel’s range of high-performance delta wing rotary mowers has been designed to deliver peak performance over the ground with working widths from 4.2 to 8.2m, flexible wings, and powerful rotors.

Key features

  • 8.2m working width
  • High and low hitch options
  • 115 degrees of wing movement (+90o up, -25o down)
  • Bondioli & Pavesi gearboxes and drivelines
  • Five powerful rotors
  • 1000rpm wide angle PTO
  • Slip Clutch Protection
  • Front and rear chain guards
  • Hardened updraft swinging blades
  • Cutting heights from 25mm to 400mm
  • 50mm cutting capacity
  • Choice of 10, 15, 20, or 30 blades
  • 79mps blade speed
  • Walking axles


Blade options

The SR820 offers operators a choice of cutting options, including a six blade shredder kit with four updraft blades and two special blades for improved mulching. A blade tip speed of 5,340m per minute ensures a powerful cutting action which makes light work of maize stubble.


McConnel’s SR series machines are fast and effective and deliver an attractive cut. The SR820’s 115 degrees of flexibility also ensures it closely follows the contours of the ground making it equally as effective in undulating terrain.


  • The largest machine in the SR range delivers exceptional productivity
  • An excellent stubble mulcher or airport mower
  • Cuts stubble low enough to prevent beetle infestation
  • McConnel’s most productive range of mowers
  • Effective in a huge range of work environments
  • Proven track record for reliability
  • Customisable with a range of blade, hitch and shredder options
  • Wide range of cutting heights
  • Enables operators to switch quickly to and from the transport position
Model SR820
Working width 8.06m / 26′ 5″
HP Requirement 150hp / 112kW
Machine weight 4330kg / 9546lbs
Attachment Drawbar
Cutting height
25mm – 210mm (1″ – 8 1/4″)
Cutting capacity
100mm (4″)
Deck height* 0.24m (10″)
Overall width
8.26m / 27′ 1″
Overall length 6.33m / 20′ 9″
Transport width 2.81m / 9′ 3″
Transport height 3.78m / 12′ 5″
PTO speed
1000 rpm
Deck construction All welded construction
Deck material thickness 5mm (3.16″)
Skid construction Replaceable bolt on skid shoes
Side skirt material thickness 6mm (4/16″)
Driveline ASAE category 4
2/4-way slip clutch on rotor gearboxes. Overrun on input shaft
Number of blades
15 x 12mm (1/2″) 30 carbon boron hardened and tempered. Free swinging high lift – low friction. Handed.
Blade bolts M24 C/W shank grade 8.8
Number of rotors 5
Blade overlap
Blade tip speed
79mps / 15551fpm
Hydraulic wing flex 45° up / 15° down
Anti-scalp dish 6mm (1/4″) round pan with blade holder bar
Input shaft 1-3/4″ Z20 SFT 10 tractor end
Gearbox [splitter] Splitter - Cast Iron housing
Gearbox [rotor] Rotor x 5 - Cast Iron housing
Gearbox oil capacity [splitter gearbox] EP80-90W - 2.7 litres / 4.7 pints
Gearbox oil capacity [centre gearbox] 3.5 litres / 6.2 pints
Gearbox oil capacity [rotor gearboxes] EP80-90W - 2.1 litres / 3.7 pints
Wheels and Tyres 8 wheels - 7.00 – 12 pneumatic tyre with steel hub
Wheel mount assembly Tubular welded walking axles
Front guard Single chain guards on each deck
Rear guard Single chain guards on each deck
*Underside of deck to skid