Mandako
Chisel Flex

CHISEL FLEX

The Chisel Flex is our chisel plow for primary tillage. We build it in Plum Coulee, Manitoba, in five widths from 40’ to 65’, with HD shanks on 12” spacing and 800+ lbs of trip on each one. It works 1” to 6” deep and leaves the residue on top instead of burying it.

What it does in the field

The shanks fracture the compaction layer under the working depth and lift the soil without turning it over. Residue stays on the surface, which is what holds the topsoil in place over winter and keeps moisture in the ground in the spring. That is conservation tillage: the ground is opened up, the trash is still there.

Shanks and trips

Shanks are 1-1/4” thick × 2” wide HD Shanks with 12” Shank Spacing, set at a 50° shank angle. Each one carries an 800 lbs trip, so a rock lifts one shank and the rest keep working. Conex bushings on the shank are replaceable, which means a worn pivot is a parts order rather than a new shank.

Flex frame

The 40’ runs 3 frame sections and 7 flex pivots; the 46’, 55’, 59’ and 65’ run 5 sections and 11 pivots. The pivots let the frame follow a contour instead of bridging it, so the shanks at the end of the wing cut the same depth as the ones behind the hitch. Depth is set mechanically, and the harrow runs on spring down pressure you set yourself.

Mandako Chisel Flex chisel plow in the field

Harrows

A 3-Row or 4-Row HD Tine Harrow is available behind the shanks. The 3-row runs 4” tine spacing, the 4-row 3”. The 4-row leaves a finer finish and adds weight to the machine, which is the trade you are making.

Hookup and transport

Pintle Cat 3 Hitch is standard and a Cat 4 is available. The plow needs 2 hydraulic ports and 10 GPM (38LPM) at 1800 PSI. Without harrows it travels 19’-5” wide, 24'-8" long and 16’ high. Casters have brakes, tires are 320/70R15 12.5L flotation, and hubs are 6-Bolt (H618) or 8-Bolt.

Sizes and options

40’ Model: 3 frame sections, 40’ working width, 7 flex pivots, 40 chisels.
46’ Model: 5 frame sections, 46’ working width, 11 flex pivots, 46 chisels.
55’ Model: 5 frame sections, 55’ working width, 11 flex pivots, 55 chisels.
59’ Model: 5 frame sections, 59’ working width, 11 flex pivots, 59 chisels.
65’ Model: 5 frame sections, 65’ working width, 11 flex pivots, 65 chisels.
Shanks: Replaceable Conex Bushings on Shank & 1-1/4” thick × 2” wide HD Shanks with 12” Shank Spacing, 50° shank angle, 800+ lbs. Trips & Floating Hitch.
Depth: 1” - 6”, Mechanical Depth Control & Spring Down Pressure.
Frame: Super Flex Frame, frame tubing 4" x 4" x 1/4" & 3/8", Minimum Maintenance Grease Points.
Harrows: 3-Row and 4-Row HD Tine Harrow (optional), 4” tine spacing on the 3-row, 3” on the 4-row.
Hitch: Pintle Cat 3 Hitch & Cat 4 (optional).
Hubs and tires: 6-Bolt (H618) or 8-Bolt, Brakes on Casters & 12.5 L Floatation Tire, 320/70R15 12.5L.
Hydraulics: 2 ports, 10 GPM (38LPM) at 1800 PSI.
Transport (w/o harrows): 24'-8" long, 19’-5” wide, 16’ high.
Weight: 16,565 lbs to 26,150 lbs with the 3-row tine; 16,925 lbs to 26,740 lbs with the 4-row.
Horsepower: 8-10 per foot on the 40’, 9-11 per foot on the wider units.
Available Sizes: 40’ | 46’ | 55’ | 59’ | 65’

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Advantages of the model

Pivots that follow the contour

7 flex pivots on the 40’ and 11 on the wider units let the frame bend with the ground instead of bridging a dip. The shank at the end of the wing runs the same depth as the one behind the hitch, so the field comes out even.

800 lbs of trip on every shank

1-1/4” x 2” HD shanks at a 50° angle, on 12” spacing, each with an 800 lbs trip. A rock lifts one shank and the rest stay in the ground. Conex bushings on the shank are replaceable, so a worn pivot is a part, not a shank.

Depth set once, held across the width

Mechanical depth control sets the shanks from 1” to 6”, and the floating hitch keeps that depth as the ground rises and falls. Down pressure on the harrow is set with springs, separately from the shank depth.

Harrow to suit the finish

A 3-Row HD Tine Harrow on 4” spacing, or a 4-Row on 3” for a finer finish. Both are optional and both mount behind the shanks, so residue is levelled in the same pass as the tillage.

Chisel Flex Specifications

Unit size	40’	46’	55’	65’
Frame Sections	3	5	5	5
Transport Length (w/o harrows)	24'-8"	24'-8"	24'-8"	24'-8"
Transport Width (w/o harrows)	19’-5”	19’-5”	19’-5”	19’-5”
Transport Height (w/o harrows)	16’	16‘ 3’‘	16’	16’
Working Width (w/o harrows)	40’	46'	55'	65'
Flex Pivots	7	11	11	11
Depth Capabilities	1” - 6”	1” - 6”	1” - 6”	1” - 6”
Chisel Spacing	12”	12”	12”	12”
# of Chisels	40	46	55	65
Tine Spacing (3-Row)	4”	4”	4”	4”
Tine Spacing (4-Row)	3”	3”	3”	3”
Hyd. Red. (@1800PSI)	10 GPM (38LPM)	10 GPM (38LPM)	10 GPM (38LPM)	10 GPM (38LPM)
Hyd. Red. (Ports)	2	2	2	2
Shank Trip (lbs)	800	800	800	800
Horsepower Sugg. (per foot)	8-10	9-11	9-11	9-11
Wheel Hub	6-Bolt	6-Bolt/8-Bolt	6-Bolt/8-Bolt	6-Bolt/8-Bolt
Tire Size	320/70R15 12.5L	320/70R15 12.5L	320/70R15 12.5L	320/70R15 12.5L
Shank Angle	50°	50°	50°	50°
Hitch Length	13’ 8’’	13’ 10’’	13’ 10’’	13’ 10’’
Unit Weight (w/3-Row Tine)*	16,565 lbs	21,570 lbs	23,490 lbs	26,150 lbs
Unit Weight (w/4-Row Tine)*	16,925 lbs	22,020 lbs	24,000 lbs	26,740 lbs

Have a question?

Below are the questions our dealers hear most often about the Chisel Flex. If yours is not here, call us or send it through the form at the bottom of the page.

What tractor do I need?

8-10 HP per foot on the 40’ and 9-11 per foot on the 46’, 55’ and 65’. You also need 2 hydraulic ports and 10 GPM (38LPM) at 1800 PSI, and a Pintle Cat 3 hitch, or the Cat 4 if that is what your tractor runs.

How deep does it work?

1” to 6”, set with mechanical depth control. Shanks sit at a 50° angle on 12” spacing, which is what lifts and fractures the layer below without inverting the soil above it.

What happens when a shank finds a rock?

The shank trips at 800 lbs and comes back down on its own. One shank lifts, the other thirty-nine to sixty-four keep working, and nothing bends. Conex bushings on the shank pivot are replaceable when they wear.

Which harrow should I take?

The 3-Row on 4” tine spacing handles most residue. Take the 4-Row on 3” spacing if you want a finer, more level finish; the extra row adds weight, so a 40’ goes from 16,565 lbs to 16,925 lbs and a 65’ from 26,150 lbs to 26,740 lbs.

What changes between the sizes?

The 40’ is a 3-section frame with 7 flex pivots and 40 chisels. The 46’, 55’, 59’ and 65’ are 5-section frames with 11 pivots, and the chisel count matches the width. Shanks, trips, depth range and transport dimensions are the same on all of them.

Check out this video of our new 40' Chisel Flex

7-Flex points allow the tool to remain in constant contact with the ground, yet the design allows for effective trash clearance.

Quick Dick McDick runs the Chisel Flex

Saskatchewan farmer and YouTuber Quick Dick McDick takes the Chisel Flex through his own ground and looks at how the frame holds depth across the width.

Brochure

The Chisel Flex brochure as a PDF: sizes, shank and harrow options and the full specification table on one sheet.

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3-SECTION Operator Manuals

This section contains PDF files of operator manuals for our equipment. These manuals provide detailed instructions on the proper and safe use of the machinery, including setup, operation, and maintenance guidelines. Click on the respective manual to download or view details specific to your model.

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