s14 s18 s24 s28 s40

Skid Steer Stump Grinders

Stump Blaster skid steer stump grinders are available in 4 models with a total of 7 hydraulic motor options to make the most of your skid steer performance, with hydraulic flows ranging from 10–40 GPM. Use the Grind Time chart to find the right motor and stump grinder for you. All skid steer Stump Grinder units are shipped with standard skid steer quick attach, and the low flow motor options come with flat-face quick couplers as well, you can order high flow hydraulic quick couplers and we have a size chart on our skidsteer flow and pressure page.

The S14 and S18 are simple rugged grinders that bring cost effective stump grinding performance to your mini-skid steer and skid steer. With the addition of swing cylinders, the S24 and S28 bring even smoother stump grinding action to your skid steer and are ideal for Tree Stump Grinding Services.

We give 6 free teeth with all new purchases and offer more free stump grinder teeth in exchange for action shots useable for marketing.

Model No. S14 S18 S24 S28 S40
Recommended HP Size 12-30 25-80 30-80 50-120 50-120
Maximum Carrier Size Check GPM & PSI Check GPM & PSI Check GPM & PSI Check GPM & PSI Check GPM & PSI
Motor Type Gerotor Gerotor Gerotor Gerotor Bent Axis Piston
Unit Weight (Shipping) Lbs. 394 642 995 995 1,200
36in Root Base

STUMP CUTTING TIMES BASED ON 24" STUMP

Motor Case Drain PSI 12 GPM 15 GPM 20 GPM 25 GPM 30 GPM 35 GPM 40 GPM CC Motor
Type
RPM at
MAX GPM
S250 Motor
Available for : S14
Not Required 2,500 50 min 40 min -- -- -- -- -- 50 Roller Vane 910
3,000 40 min 35 min -- -- -- -- --
S450 Motor
Available for : S14,S18
Not Required 2,500 60 min 40 min 35 min -- -- -- -- 125 Roller Vane 520
3,000 50 min 30 min 30 min -- -- -- --
3,500* -- 30 min 25 min 20 min 16 min -- --
3,500* -- -- 40 min 25 min 15 min 12 min 10 min

 * Motor will run at this PSI but excess pressure is dumping over relief.

SKIDSTEER STUMP CUTTING TIMES BASED ON 24" STUMP

Motor Case Drain PSI 12 GPM 15 GPM 20 GPM 25 GPM 30 GPM 35 GPM 40 GPM 50 GPM CC Motor
Type
RPM at
MAX GPM
3,000 40 min 35 min -- -- -- -- -- --
3,500* 40 min 35 min -- -- -- -- -- --
S445 Motor
Available for : S24
Not Required 2500 -- 60 min 40 min 35 min -- -- -- -- 125 Roller Vane 520
3,000 -- 50 min 30 min 30 min -- -- -- --
3,500* -- 50 min 30 min 30 min -- -- -- --
3,000 -- -- 30 min 30 min 20 min 16 min -- --
3,500* -- -- 30 min 30 min 20 min 16 min -- --
3,000 -- -- -- 40 min 25 min 15 min 12 min 10 min
3,500* -- -- -- 40 min 25 min 15 min 12 min 10 min
3,000 -- -- 25 min 12 min 10 min 8 min -- --
3,500 -- -- 23 min 10 min 8 min 6 min -- --
3,000 -- -- -- 25 min 10 min 8 min 7 min 6 min
3,500 -- -- -- 23 min 8 min 6 min 5 min 4 min

 * Motor will run at this PSI, but excess pressure is dumping over relief.
    5 GPM is used for swing cylinder.

HOW TO CHOOSE THE RIGHT MOTOR

The most important part of choosing the right BrushFire is matching the correct motor option to your equipment. It can make a huge difference. In this video, we explain how to use our charts to determine which motor is right for you!

Understanding Motor Understanding Motor
Hydraulic Flow & Pressure Hydraulic Flow & Pressure
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Updated as of November 15, 2019 5:58 PM EST

UPCOMING PUBLIC HOLIDAYS

Date Description

STUMP GRINDERS

Model Number Discount Available Number of Business Days
to build first order
Number of Business Days
to build next order
Location Notes Discount Description
WB44Stock5MTB
GWM53015%718MTBSame as HGW30Yellow Holt frame
HGW60Stock146MTB
1P24Stock3MTB
3P24Stock3
S105033Any 3P with valve kit (this covers all the time)
3P34Stock3
3P40Stock4
3P50154154NEED TO DESIGNNew 150 Hp model
3P60154154NEED TO DESIGNNew 200 hp model
S1429MTB
S18-S450Stock3MTBStock w/D001127 plate
S18-S550Stock3MTBStock w/D001127 plate
S18-S650Stock3Stock w/D001127 plate
S2424
S2829
S401010
GXM350310
GXM550310
GXM7501818

PUBLIC HOLIDAYS

Date Description