Grun Model SB7 Strawblower

The Grun model SB7 Strawblower is aerodynamically engineered so that the airflow through the machine follows the curved and funneled lines of the machine and never hits a right angle. This design allows the airflow to increase in velocity as it moves through the machine. The direct application of power and Grun’s more efficient aerodynamic design are why the Grun model SB7 Strawblower achieves a greater discharge range than competitive models in its class – even though some competitive models use the same engine.

Strawblowers

Strawblowers, Straw Blowers, Hay Blowers, Straw Mulchers or simply Mulchers are all the same equipment. All Strawblowers make it possible to achieve a 30-40% material savings and to achieve up to an 80% labor savings vs hand mulching straw. The key is to buy the Strawblower that is the best value for the money.

Strawblowers cost effectively mulch baled straw and disperse it on the ground as an evenly distributed blanket. The results save contractors both time and money by reducing & using labor and materials more efficiently. Strawblowers are a cost effective tool for job site erosion control compliance as mandated by federal EPA requirements. Mulched straw also provides insulation to newly planted seed.

Download Grun SB7 Spec Sheet

Download Grun SB7 Comparison

	Grun SB7	Finn B70

POWER	Diesel Kubota V 1505, 33.5 hp (25kw), 4 cylinder water cooled diesel engine with over-center clutch.	Diesel Kubota V 1505, 33.5 hp (25kw), 4 cylinder water cooled diesel engine with over-center clutch.

ENGINE SAFETY SYSTEM	Low oil pressure, high water temperature shutoff.	Low oil pressure, high water temperature shutoff.

FUEL TANK CAPACITY	17 gal. (64 liters).	13.5 gal. (51 liters).

CAPACITY	Up to 7 tons of hay or straw per hour.	Up to 7 tons of hay or straw per hour.

DISCHARGE DISTANCE	65 feet (21.3m) in still air.	60 feet (18m) in still air.

FEED	Manual	Manual

BEATER CHAMBER	7.5 cubic foot (0.21 meters) with removable adjustable beater chains.	3.5 cubic foot (0.10 meters) with removable beater chains.
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DISCHARGE HEAD	Roller bearing mounted. 360 degrees horizontal rotation and 70 degrees vertical travel.	Block bearing mounted. 360 degree horizontal rotation and 70 degree vertical travel.

BLOWER	21" (53 cm) diameter, dynamically balanced, 6 blade fan with a discharge velocity greater than 170 mph (274 km/h) - discharge velocity equals the wind speed of a Class 5 Hurricane.	Dynamically balanced, 21" (53 cm) diameter fan with 6 blades developing a discharge velocity greater than 150 mph (240 km/h).

FEED TRAY	Folding tray, turnbuckle adjustable to meet bed height of supply vehicle.	Folding tray, adjustable height to meet bed of supply vehicle.

DRIVE	Blower fan in-line attached to over-center clutch with flexible coupling. Fan shaft extends all the way through the beater chamber and is securely frame mounted at both ends - reduces vibrations, helps eliminate splitting weld seams.	Blower fan in-line coupled to over-center clutch with flexible coupling and two pillow block bearings.

WEIGHT	SB7T - 2,450 lbs. (1,111 kg).	B70T - 2,250 lbs. (1,020 kg).

TRAILER OPTION	Independent suspension rubber torsion axle, ST205/75R/15 load range B, highway tread radial tires, fenders, D.O.T. highway lights, dual skid proof operator platforms, parking jack, 2" (5 cm) ball or heavy duty eye hitch.	Independent suspension rubber torsion axle, 75R/15 load range B, highway tread radial tires, fenders, D.O.T. highway lights, dual skid proof operator platforms, parking jack, 2" (5 cm) ball or heavy duty eye hitch.

BRAKES	Electric with breakaway switch standard. Hydraulic surge brakes optional.	Electric with breakaway switch.

	*All units specified as trailer mount. For skid mount specific questions, please contact us.