Hydraulic snowblower
Hydraulic snowblower
(OP)
I m trying to find out the type and size of hydraulic motor to run a snowblower with a pump that put's out 15.6 GPM @ 3300 rpm....Also if anyone would know at what rpm and torque does the motor would have to run at on hydraulic snowblowers...Thank you





RE: Hydraulic snowblower
RE: Hydraulic snowblower
RE: Hydraulic snowblower
RE: Hydraulic snowblower
Ted
RE: Hydraulic snowblower
RE: Hydraulic snowblower
That torque that size motor will deliver at 3300psi is 6.67*33000/(2*pi) = 35,032 lb.-in. or 2,919 lb.-ft.
Can you find a motor that size or close to that?
Will the torque be enough, too much, too little? Snow load on the blower will determine torque demand, and directly pressure demand. As the snow load varies so will the hydraulic pressure.
Will your prime mover, gas or diesel engine, deliver what the pump will demand? Will the engine speed be controlled by a governor or fixed throttle opening? Where on the torque curve will your engine be operating at the speed required to have the pump produce 15.6gpm? If too low on the torque curve the engine will slow and stall.
Ted
RE: Hydraulic snowblower
RE: Hydraulic snowblower
You should have a relief valve in the circuit to safeguard components if the snowblower stalls.
Ted
RE: Hydraulic snowblower
Ted
RE: Hydraulic snowblower
RE: Hydraulic snowblower
RE: Hydraulic snowblower
The pumps on the 226B will have a max working pressure that is independent of engine speed and the machine is capable of achieving the max pressure at low idle and high idle. All engine speeds in fact.
Cheers
Adrian
Adrian Wright CEng MIMechE
Engineering Specialist
Hydraulic Systems
Caterpillar (UK) Ltd
RE: Hydraulic snowblower
RE: Hydraulic snowblower
For 16gpm flow rate, I would opt for the -12, 1-1/6 thread port and 3/4 inch pressure hose and 1 inch return hose. Keep your pressure losses down.
I expect for a snowblower you would want speed so that the blower can throw the snow. Torque available will determine how heavily you can load snow into the blower and still keep the blower speed up.
Ted
RE: Hydraulic snowblower
RE: Hydraulic snowblower
RE: Hydraulic snowblower
You indicate that the motor has SAE 10 ports. I'm suggesting you select SAE 12 ports.
Ted
RE: Hydraulic snowblower
RE: Hydraulic snowblower
Even a -12 fitting at 15.6gpm would have a flow velocity well over 15 ft/sec, which is what I would use for a hydraulic motor inlet port.
RE: Hydraulic snowblower
Ted
RE: Hydraulic snowblower
RE: Hydraulic snowblower
RE: Hydraulic snowblower
Good to see the flush face quick couplings. The industry I worked in pushed the coupling manufacturers to create those for nearly drip free and easy to clean couplings.
Ted