Spread, smooth and finish mortars, renders, adhesives and skim coats by hand.

Petrol vibrating unit UM38B for vibrating screed Breaker
Key features
- MotorPetrol
- Motor typeHonda GX200
- Power4 kW (5,5 HP)
- Weight (kg)38
What it is
The UM38B Breaker special unit is an advanced solution for compacting and smoothing large concrete surfaces, designed to deliver uniform, professional results on industrial sites, logistics floors and high-traffic surfaces. Thanks to the 4 kW (5.5 HP) Honda GX200 engine, this power unit ensures consistent performance and reliability even in the most demanding conditions. Light (only 38 kg) yet robust, it fits Breaker vibrating screeds perfectly, offering manoeuvrability and precision in every application.
A screed is a straightedge, manual or vibrating, drawn across fresh concrete or mortar to level and compact screeds, floors and renders.
What it is for
Used for finishing fresh concrete and for pouring concrete, from formwork to vibration.
How to use it
Set up screed rails or level strips at the finished level and spread the material slightly proud. Rest the screed on the rails and draw it along with a back-and-forth sawing motion, filling voids as you go; advance vibrating screeds and power screeds slowly, letting the vibration compact the concrete. After use, wash the screed before the material hardens.
Where it is used
- Commercial construction
- Industrial construction
Technical data
- Motor: Petrol
- Motor type: Honda GX200
- Power: 4 kW (5,5 HP)
- Weight (kg): 38
Who it is for
Designed for concrete workers and flooring and paving contractors.
Related products
- Electric vibrating unit UM26E for screed Breaker
- Petrol vibrating unit UM33B for vibrating screed Breaker
- Set of roughing blades Breaker — from the category Vibrating Screeds and Power Trowels for Concrete
- Pneumatic Vibrating Poker AD, Breaker — from the category Concrete Vibrators
- Water levels S 1012 G — from the category Builder's Spirit Levels
- Browse the whole category: Screeding Straightedges
Before you order
In your request, please state the power rating and the quantities required, so we can give you the right quotation first time.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
Specifications 4
| Motor | Petrol |
|---|---|
| Motor type | Honda GX200 |
| Power | 4 kW (5,5 HP) |
| Weight (kg) | 38 |
Compare with similar models
Technical data declared by the manufacturers. An empty cell means the figure is not declared.
| Feature |
This model
Petrol vibrating unit UM38B for vibrating screed Breaker
|
Petrol vibrating unit UM33B for vibrating screed Breaker
|
Electric vibrating unit UM26E for screed Breaker
|
|---|---|---|---|
| Brand | Breaker | Breaker | Breaker |
| Motor | Petrol | Petrol | Three-phase electric 400 V |
| Motor type | Honda GX200 | Honda GX160 | — |
| Power | 4 kW (5,5 HP) | 3,6 kW (4,8 HP) | 0,75 kW (1 HP) |
| Weight | 38 kg | 33 kg | 26 kg |
| View product → | View product → |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Compact fresh concrete in the formwork, expelling the air.
Smooth and compact fresh concrete to achieve flat, closed floor surfaces.
Check whether surfaces, lines and components are level, plumb or sloping.







