
+ applicable tax
Your Broce 350's main broom has lost power ā the broom core is spinning slowly, stalling under load, or won't turn at all. The hydraulic motor that drives the 8-foot broom core has failed internally. Worn gerotor elements, blown shaft seals, or internal bypass means the motor can't generate the torque needed to sweep. The Broce dealer is quoting $855 to $1,237 for a replacement motor. That's a brutal hit on a wear component.
We sell the direct replacement for $808.80 ā saving you hundreds vs the dealer. This is the same specification motor: 24.0 cubic inch displacement for maximum sweeping torque, 1-1/4" 14-tooth splined shaft that fits the standard Broce core hub, and 2-bolt SAE A mounting pattern. It bolts directly into the broom core housing and connects to the existing hydraulic lines. Replaces Broce part number 305943.
The Broce 350 main broom core uses a 14-tooth splined shaft motor. This is NOT a keyed shaft. Broce uses keyed shaft motors on the smaller gutter brooms, but the main 8-foot broom core requires the splined shaft to handle the significantly higher torque loads. A keyed shaft motor will NOT fit the broom core hub.
How to verify: Look at the shaft end of your existing motor. If it has teeth/splines around the circumference (like a gear), this is the correct splined shaft style. If the shaft is round with a single flat key slot, you need a keyed shaft motor (and this is NOT it).
The main broom core motor is the heart of any Broce sweeper. It's a high-displacement hydraulic motor that converts hydraulic flow into the rotational force that drives the broom core at the correct speed and torque. The broom core sits in the worst possible environment ā dust, dirt, debris, water, and abrasive materials are constantly being thrown against the motor. Over time:
When the broom motor fails, the sweeper can't sweep. It becomes a very expensive truck that can't do its job. Every day the broom is down is lost contract revenue ā municipalities, airports, and construction companies don't wait for parts.
This is a high-torque, low-speed hydraulic motor built to the same specification as the OEM unit: 24.0 cubic inch displacement (395 cc) provides the massive torque needed to drive an 8-foot broom core through heavy debris, wet material, and compacted dirt. The 14-tooth splined shaft engages directly with the broom core hub, and the 2-bolt SAE A flange bolts directly to the core housing. Remove the old motor, bolt on the new one, connect the hydraulic lines, and the broom is sweeping again.
The 305943 main broom core motor fits:
ā ļø Verify Broce part number 305943 in your parts manual. Confirm your broom core hub accepts a 14-tooth splined shaft (not keyed). Contact us with your sweeper model and serial number if you're unsure.
What is the difference between the main broom motor and the gutter broom motor?
The main broom core motor (this part) is a large 24.0 cu in displacement motor with a 14-tooth splined shaft ā it drives the full 8-foot main broom. The gutter broom motor is a smaller displacement motor with a keyed shaft ā it drives the small side-mounted gutter broom. They are NOT interchangeable. Different size, different shaft, different mounting.
Why does the shaft type matter so much?
The broom core hub has internal splines that mesh with the motor's splined shaft. This spline connection is what transfers torque from the motor to the broom. A keyed shaft motor cannot engage these splines ā it physically will not fit into the hub. Always verify your shaft type before ordering.
Should I flush the hydraulic system when replacing the motor?
If the old motor failed catastrophically (metal particles in the oil, seized internals), yes ā you should flush the system and replace the hydraulic filter before installing the new motor. Contaminated oil will damage the new motor immediately. If the old motor simply wore out gradually (loss of power, slow rotation), a filter change and oil top-off may be sufficient.
How many hours does a broom core motor typically last?
A well-maintained broom motor typically lasts 2,000ā4,000+ hours depending on operating conditions. Sweeping abrasive materials (gravel, sand, construction debris) wears motors faster than sweeping light debris (leaves, paper). Keeping the hydraulic oil clean and the filter changed on schedule is the single most important factor in motor longevity.
What hydraulic oil should I use?
Use the hydraulic oil grade specified in your Broce operator's manual ā typically AW-46 (ISO VG 46) hydraulic oil. Do not mix oil types or grades. If the system has been contaminated, flush completely before refilling with fresh oil.
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