Vibratory Screed Motors

A replacement drive or motor is matched primarily to the brand and model of your screed, because mounting, shaft diameter and connector type differ between manufacturers. Key parameters to check are the drive type (a petrol engine mounted directly on a profile usually 1.5–3.6 m long, or a separate drive connected by a flexible shaft to an oscillating screed), the engine power (usually about 1 HP / 0.7 kW for petrol units) and the supply voltage on electric versions — single-phase 230 V or three-phase 400 V. The part number on the screed's nameplate lets you identify a replacement without modifications.

A petrol engine mounted directly on the profile is a small 4-stroke unit, usually about 1 HP (0.7 kW), which vibrates the whole aluminium profile, 1.5–3.6 m long — used in classic floating screeds. An oscillating-screed drive is a separate unit, petrol or electric, connected to the working beam by a flexible shaft that transmits reciprocating motion instead of high-frequency vibration — used in larger, heavier sets for finishing big concrete surfaces such as industrial halls. Both drive types are sold in this category as replacement parts, independent of the profile.

The cost of a replacement drive or motor for a vibratory screed depends on its type (petrol or electric) and brand — a small petrol unit of about 1 HP (0.7 kW) for a 1.5–2 m profile usually costs from a few hundred up to around a thousand PLN net, while a drive for a heavier oscillating screed or an electric 400 V version costs more. Price also depends on whether you choose an original part from Enar, Husqvarna Construction or Toolsa, or a cheaper universal replacement. Current prices for specific models are shown on the product pages in this category.

At NORWIT.PL you will find vibratory screed drives and motors primarily from Enar, Husqvarna Construction and Toolsa — each offering petrol units mounted directly on the profile as well as electric drives compatible with profiles 1.5–3.6 m long. Enar produces, among others, the Technoflex range of drives for oscillating-screed systems, while Husqvarna Construction and Toolsa complete the range with petrol and 230/400 V electric units. The choice of brand depends mainly on which drive is already fitted to your screed — the part number on the nameplate makes selection easier.

Replacement drives are not universal — the mounting to the profile, shaft diameter and connection method (directly on the screed, or through a flexible shaft on an oscillating screed) differ between manufacturers and even between series from the same manufacturer. Matching by power alone, e.g. about 1 HP (0.7 kW), isn't enough if the mounting geometry is different. The most reliable way to choose is the part number from the existing drive's nameplate, or giving the screed's model when ordering — this lets you pick a replacement that fits without mechanical modifications.

In petrol drives, engine oil is usually changed every 50–100 engine hours or once a season, depending on how intensively the unit is used — the first change after about 5–10 hours is recommended on a new unit, to remove break-in debris. It is also worth regularly checking the air filter, the spark plug, and how tight the drive is mounted to the profile, since loose bolts speed up bearing wear. Electric drives need less frequent servicing — mainly checking the motor brushes and the condition of the power cable every few seasons.

An original drive from a given brand has its mounting, shaft and bushings made precisely for that screed model, which ensures full alignment and a longer bearing life, and the manufacturer provides a part number and a compatibility guarantee. A cheap universal replacement can be tens of percent cheaper, but if the mounting doesn't fit precisely it increases side vibration and speeds up wear on both the profile and the drive. For equipment used occasionally a replacement can be justified economically, but for daily use in a construction company an original Enar, Husqvarna Construction or Toolsa drive usually works out cheaper per engine hour.

Installation starts with disconnecting the fuel or power supply and unscrewing the bolts holding the old drive to the profile — usually 2–4 bolts or nuts depending on the model. The new drive is positioned the same way on the profile, the bolts are tightened crosswise with even torque, and on drives for an oscillating screed the flexible shaft is additionally connected to the drive unit. Finally, check the oil level on petrol units and test idle running before the equipment goes back on site. If you are unsure about the mounting, it's worth confirming the screed model before ordering.