Toothed belt for Holzmann ZS640P and Bernardo WBS640PRO calibrating sander
Electronic board for calibrating sander
Drive pinion rep 110 for calibrating sander
Feed motor and gearbox for calibrating sander
Replacement conveyor belt, reference 10002921, for 640 mm drum sanders.
This feed belt ensures smooth and consistent feeding of workpieces beneath the sanding drums.
Compatible with:
Position 136 - Reference: 10002921
The Holzmann ZS640P is a professional twin-drum sander designed for accurate sanding and thicknessing of wooden workpieces. With its 640 mm sanding width and two sanding drums, it allows coarse and fine sanding to be carried out in a single pass.
The twin-drum design is one of the main advantages of the ZS640P. Two different abrasive grits can be used simultaneously, for example P80 on the first drum and P120 on the second drum. The workpiece is therefore sanded with a coarser grit and immediately finished with a finer grit without having to change the abrasive.
Depending on the version, the ZS640P is available in 230 V or 400 V and features a conveyor belt with continuously adjustable feed speed.
This category contains spare parts for the Holzmann ZS640P drum sander for maintenance and repair, including conveyor belts, timing belts, drive gears, feed motors with gearbox, electronic control boards, switches, sanding drum rollers and other mechanical or electrical components.
The conveyor belt is an essential component of the Holzmann ZS640P. It ensures a smooth and consistent feed of wooden workpieces beneath the two sanding drums.
A conveyor belt in good condition is essential for maintaining a constant feed rate and achieving consistent sanding and thicknessing along the entire length of the workpiece.
Over time, the belt may wear, lose its grip, become loose or suffer damage. A workpiece that slips, moves irregularly or has difficulty passing beneath the sanding drums may therefore indicate a problem with the conveyor system.
The conveyor belt reference 10002921, item 136, is one of the replacement parts available for the Holzmann ZS640P and may also be suitable for certain machines of similar design.
A conveyor belt that gradually moves to the right or left does not necessarily need to be replaced.
The Holzmann ZS640P features a system for adjusting the parallel tracking of the conveyor belt.
If the belt tends to move sideways, its tracking, tension and the condition of the rollers should therefore be checked first.
Incorrect tracking can cause premature belt wear and may eventually damage the edges of the conveyor belt.
The timing belt is part of the machine's drive system and helps transmit movement between the various mechanical components.
This part is subjected to repeated mechanical stress and may gradually wear, become loose or develop damaged teeth.
A damaged timing belt can cause loss of drive, jerky operation or complete failure of part of the mechanism.
The timing belt, item 135, is one of the replacement parts available for the Holzmann ZS640P. Depending on the version, it may also be compatible with the Bernardo WBS640PRO.
The gears play an important role in the drive system of the drum sander.
The drive gear, item 110, is one of the mechanical components that can be replaced on the Holzmann ZS640P.
With regular use, the teeth of a gear can become worn or damaged. Jerky transmission, unusual mechanical noises or loss of drive may therefore be caused by this type of component.
Before replacing the feed motor, it is important to inspect the gears and other mechanical transmission components as well.
The conveyor system uses a feed motor combined with a gearbox.
This assembly drives the conveyor belt at the selected speed and ensures that the workpiece moves smoothly beneath the sanding drums.
However, if the conveyor belt stops or lacks power, the feed motor is not necessarily the cause.
The timing belt, gears, rollers, conveyor belt tension, electrical connections and control system should also be inspected before replacing the complete motor and gearbox assembly.
The Holzmann ZS640P features a continuously adjustable conveyor feed speed controlled electronically.
The electronic control board plays an important role in controlling and regulating the conveyor feed system. A faulty board may cause problems with conveyor operation or speed adjustment.
However, a feed speed problem does not automatically mean that the electronic control board is defective.
Before replacing it, the feed motor, electrical connections, power supply and other components associated with the conveyor system should be checked.
The switch is an important electrical component of the drum sander.
A faulty switch can prevent the machine from starting or cause abnormal operation.
The ZS640P also incorporates safety devices that control machine operation, particularly around access to the sanding drums.
If the machine does not start, the complete control and safety circuit should therefore be checked before assuming that the main switch needs to be replaced.
The sanding system of the ZS640P uses two drums that work successively on the surface of the workpiece.
The drums must rotate smoothly to minimise vibration and maintain consistent sanding quality. The sanding drums of the ZS640P are dynamically balanced to ensure smooth operation.
A damaged or deformed drum, or a problem with its shaft or bearings, can directly affect sanding quality.
Bearings, shafts and fixing systems should therefore also be inspected if a problem occurs around one of the sanding drums.
Sanding strips for the Holzmann ZS640P are the main consumables used on the machine.
The ZS640P is designed to use two abrasives simultaneously. Its standard configuration includes P80 and P120 abrasives, allowing coarse sanding followed by finer finishing in the same pass.
Pre-cut sanding strips measuring 2830 x 102 mm are available for this machine in different grit sizes.
Suitable abrasive rolls can also be used, provided that the correct dimensions and cutting pattern required for installation on the sanding drums are respected.
The twin-drum system allows the Holzmann ZS640P to perform two sanding stages during a single workpiece pass.
The first sanding drum can be fitted with a relatively coarse abrasive for greater material removal. The second drum can then use a finer abrasive to immediately improve the surface finish.
This makes it possible to perform coarse sanding and finishing in a single pass.
This configuration is particularly useful for repetitive work and batches of workpieces, as it reduces the number of operations required.
An abrasive should not be used until it has almost completely lost its cutting ability.
A clogged, worn, torn or inefficient sanding strip reduces sanding quality and may encourage the operator to increase the sanding depth excessively.
This places unnecessary strain on the motors, sanding drums and conveyor system.
Regular replacement of worn abrasives therefore helps maintain machine performance while providing a better surface finish.
If the conveyor belt on your Holzmann ZS640P stops moving, runs intermittently, slips or lacks power, several components may be responsible.
Check the following components:
conveyor belt condition and tension;
conveyor belt tracking and adjustment;
timing belt;
drive gears;
feed motor and gearbox;
electronic control board;
electrical connections and components.
It is therefore advisable to carry out a complete diagnosis before ordering a replacement feed motor or electronic control board.
The Holzmann ZS640P has technical similarities with the Bernardo WBS640PRO, and certain spare parts may be suitable for both machines.
This applies, for example, to certain components available in our range, such as the timing belt or conveyor belt reference 10002921.
However, this does not mean that all parts from the two machines are interchangeable.
Compatibility should always be checked individually on the relevant spare part product page.
The Holzmann ZS640P is available in 230 V and 400 V versions.
This difference is particularly important when ordering electrical components such as motors, switches, electronic boards and other parts related to the machine's power supply.
Before ordering an electrical spare part, always check the voltage shown on the machine identification plate.
A component intended for a 230 V version should never automatically be considered compatible with a 400 V ZS640P, and vice versa.
The exploded diagram is particularly useful for accurately identifying Holzmann ZS640P spare parts.
The individual components are identified by item numbers, making it easier to find the correct replacement part. For example, the drive gear is listed as item 110, the timing belt as item 135 and the conveyor belt as item 136.
Using these item numbers helps reduce the risk of ordering the wrong spare part.
IMPORTANT: BEFORE PURCHASING, always check the list of compatible machines shown on the product page and, where required, the month and year of manufacture or the serial number of your machine.
Regular maintenance helps preserve the performance, accuracy and service life of your drum sander.
Regularly remove dust accumulated around the sanding drums and drive system, inspect the abrasives and conveyor belt, and periodically check the condition and tension of the transmission components.
Also monitor conveyor belt tracking and make sure the various safety devices operate correctly.
An efficient dust extraction system is essential to reduce dust accumulation and prevent premature clogging of the abrasives.
Before cleaning, adjustment, maintenance or repair work, always disconnect the Holzmann ZS640P from the power supply.
A conveyor failure, worn timing belt, damaged gear or electrical fault does not necessarily mean that your drum sander needs to be replaced.
Our selection of spare parts for the Holzmann ZS640P allows many individual components to be replaced, including the conveyor belt, timing belt, drive gear, feed motor with gearbox, electronic control board, switch, sanding drum roller and abrasives.
Accurately identifying the cause of the problem and the item number of the required component before ordering will help you repair your Holzmann ZS640P drum sander efficiently and extend its service life.
