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SK850 Footings Machine
The Ditch Witch SK850 footings machine combines the most productive and durable mini skid steer in its horsepower class with the most efficient footings trencher available. Now you have the ideal machine for creating footings for residential or commercial properties. Tight jobsites are no problem for this compact, powerful and ultra-durable machine, which creates cleaner, more consistent footings than an excavator can, and in less time.
Designed for installation of footings for slab construction for residential or commercial property; trenches up to 16 inches (41 cm) wide and up to 36 inches (91 cm) deep.
Mounts directly to the frame of the powerful SK850, creating the most productive footings machine on the market.
Compact package reduces bounce and increases productivity.
Tier 4 Yanmar® diesel engine with 37 hp (27.6 kW) provides outstanding power for all machine functions.
Belt-free design means less maintenance and more uptime.
Standard auto-throttle—incorporated into the new LCD display—reduces engine throttle when there is no load on the engine, for greater efficiency.
When enabled, the standard auto-throttle function reduces engine rpm after a period of sustained inactivity, improving engine performance.
Single-point, lockable fuel and hydraulic fluid tanks for improved security.
Multi-position trencher—centerline to offset digging—allows you to trench right up next to the backer board.
Heavy-duty chain with 50,000-lb (22,680-kg) tension creates a cleaner, more consistently deep and wide trench than an excavator can, and in less time.
With 43 inches (109 cm) of track on ground, the SK850 footings machine has the stability to effectively cross-trench.
Low-maintenance track-tensioning system features a grease cylinder for easy adjustment and track removal.
Maximum 4.7-mph (7.6-km/h) ground drive speed (in both forward and reverse) enhances jobsite efficiency and productivity.
The SK850 comes standard with 42-inch (107-cm) tracks.
Ergonomic operator’s station has been updated with new, customer-requested features for optimized comfort and efficiency; comes with standard dual-lever ground drive controls.
Advanced monochrome display mounted in dash displays engine diagnostics and contains standard gauges.
Auxiliary control foot pedal helps you maintain hydraulic flow to the trencher, freeing your hands to control depth and ground speed.
The 74-sq-inch (188-cm2) platform is larger and provides more ground clearance than the competition’s, increasing operator comfort and stability while keeping the worksite visible.
Your Ditch Witch equipment is backed by a worldwide network of dealers you can count on for unmatched commitment to your success. From genuine Ditch Witch parts to factory-trained service to expert advice, your Ditch Witch dealer has it all for you.
|Trench depth, max||36 in||914 mm|
|Angle of approach||30°|
|Angle of departure||27°|
|Trench width, min to max||6-16 in||152-406 mm|
|Boom travel, up/down||60°|
|Centerline trench to outside edge of unit, right||4-20 in||101-508 mm|
|Centerline trench to outside edge of unit, right||21-37 in||533-940 mm|
|Headshaft height, diffing chain||23 in||584 mm|
|Height||57 in||1.4 m|
|Headshaft overhang||18 in||457 mm|
|Length, transport||124 in||3.15 m|
|Wheelbase||43 in||1.1 m|
|Width, transport||42 in||1.1 m|
|Tread||33.1 in||841 mm|
|Ground clearance||8.9 in||226 mm|
|Emissions compliance||EPA Tier 4 Final||EU Stage IIIA|
|Number of cylinders||3|
|Displacement||100.1 in3||1.64 L|
|Bore||3.46 in||88 mm|
|Stroke||3.54 in||90 mm|
|Manufacturer's gross power rating||36.9 hp||27.5 kW|
|Estimated net power rating||35.1 hp||26.2 kW|
|Rated engine speed||3,000 rpm|
|Tilt angle, fore and aft, max**||30°|
|Tilt angle, side to side, max**||30°|
|Ground drive speed, max|
|Forward/reverse||4.7 mph||7.6 km/h|
|Digging chain speed @ 3,000 rpm engine speed, max||402 fpm||7.6 km/h|
|Vehicle clearance circle (SAE)||21.8 ft||122.5 m/min|
|Operating weight***||3,840 lb||6.7 m|
|Headshaft speed @ 2,300 rpm engine speed, max||210 rpm||1742 kg|
|Auger: single, tapered, w/outboard support bearing|
|Diameter, max||10 in||254 mm|
|Diameter, min||9 in||229 mm|
|Length||20 in||508 mm|
|Double gear pump|
|Flow rate (Pump #1)||8.8 gpm||33 l/min|
|Flow rate (Pump #2)||5.1 gpm||20 l/min|
|Pressure||3,625 psi||250 bar|
|Flow rate||15 gpm||56.8 l/min|
|Pressure||3,625 psi||250 bar|
|Fuel tank||10.5 gal||39.7 L|
|Engine oil, initial||5 gal||18.9 L|
|Hydraulic reservoir||9.2 gal||34.8 L|
|Hydraulic system||11.55 gal||43.7 L|
|SAE reserve capacity rating||110 min|
|SAE cold crank @ 0ºF (-18ºC)||800 amps|
|Operator ear sound pressure||91 dBA|
|Exterior sound power||104 dBA|
|During normal trenching operation, vibration transmitted to the operator’s:|
|Hand||32.2 ft/sec2||9.82 m/sec2|
|Whole body||6.2 ft/sec2||1.9 m/sec2|
|Dimensions are based on TR50 attachment and 24-in boom.|
|**Exceeding these operating angles will cause engine damage. This does not imply that the machine is stable to maximum angle of safe engine operation.|
|***Operating weight based on TR50 attachment with 24-in boom, 16-in wide chain and 175-lb (79-kg) operator.|
|Specifications are general and subject to change without notice. If exact measurements are required, equipment should be weighed and measured. Due to selected options, delivered equipment may not necessarily match that shown.|
We’ve made a wide variety of valuable safety information available in one convenient location. Ditch Witch Safe is dedicated to providing the resources you need to operate your equipment safely.