SR421 Snow Blower

Studio Shot


Designed for removing snow from streets, parking lots, driveways and sidewalks.Cat® Snow Blowers are designed for removing snow from streets, parking lots, driveways and sidewalks, making them ideal for various winter cleanup and maintenance applications.


Designed for removing snow from streets, parking lots, driveways and sidewalks.

Two Stage Design

Two-stage design uses auger and impeller to move a greater capacity of snow quickly and efficiently. Also, the auger and impeller are reversible which allows the operator to expel obstructions without exiting the machine.

Fan Style Impeller

Provides smooth operation and continuous flow of material in a variety of snow conditions.

Hydraulic Controls

Machine joysticks control chute and deflector. No additional wires or hardware to connect. Complete control with plug-n-play simplicity.

Chute Rotation and Deflector

270 degrees of rotation permits snow discharge to front or sides of machine preventing snow blow back on operator. Hydraulically controlled deflector makes it easy to control how far snow is thrown.

Offset Chute

Improves visibility and allows full range of motion on Compact Wheel Loader machines.

Adjustable Skid Shoes

Adjust height of cutting edge to suit the job needs.

Reversible Bolt-On Cutting Edge

Bolt-on reversible cutting edge adds extra life to the cutting edge and make replacement simple.

Rugged Access Step and Grab Handle

Wide steps with grating and large profile serrations provide better traction. Chute mounted grab handle allows stability when entering and exiting machine.

OMM Container

Tool mounted and sealed from the elements, this holder includes all the operation manuals and maintenance guides required for proper operation of the tool.

  • Specs
  • Docs



Long Name:
SR421 Snow Blower
Intake Width
76.5 in / 1942 mm
Overall Width
85.9 in / 2181 mm
1016.3 lb / 535 kg
Overall Height
72.6 in / 1843 mm
Overall Length
37.4 in / 951 mm
Required Hydraulics
Optimal Hydraulic Flow
125-150 L/min (33-40 gpm)
Optimal Hydraulic Pressure
200-280 bar (2800-4100 psi)
Cutting Height
34.1 in / 867 mm
Maximum Throw
40 ft / 12.2 m
Auger Diameter
18 in / 457 mm
Impeller Fan Diameter
25 in / 635 mm
Impeller Fan Width
8.7 in / 222 mm
Chute Rotation
270 degrees