Polymak

Polymak offers two stand-mounted diamond core drills for creating openings in reinforced concrete, brick, stone, and other construction materials. The PM250DCD has a maximum core drilling capacity of 250 mm, while the higher-powered PM300DCD increases that capacity to 300 mm.

Compare the specifications, operating features, and intended applications of both Polymak diamond core drill models, along with the electrical, purchasing, and support details U.S. buyers should verify before ordering.

• Key differences between the PM250DCD and PM300DCD
• Core drilling features, applications, and model selection factors
• Electrical, shipping, warranty, and support details for buyers

Polymak Diamond Core Drill Models

PM250DCD 250 Diamond Core Drill

The Polymak PM250DCD is a stand-mounted diamond core drill with a listed maximum drilling capacity of 250 mm. It features a 3,200 W motor and a no-load speed of 700 rpm.

At a listed weight of 21 kg, the PM250DCD is lighter than the PM300DCD. The official specifications also list a tilting base, which allows the drilling angle to be adjusted when site conditions and the anchoring method permit.

Consider the PM250DCD for projects that require openings of up to 250 mm and can accommodate its power, speed, mounting, and electrical requirements.

Product Specifications

Maximum Core Drilling Capacity	250 mm
Input Power	3,200 W
No-Load Speed	700 rpm
Base Type	Tilting
Weight	21 kg

PM300DCD 300 Heavy-Duty Diamond Core Drill

The Polymak PM300DCD increases the listed maximum core drilling capacity to 300 mm. It features a 3,900 W motor, a no-load speed of 500 rpm, and is listed by Polymak as part of its Heavy Duty Series.

The PM300DCD weighs 25 kg, which is 4 kg more than the PM250DCD. Consider this model when the required opening exceeds the PM250DCD’s 250 mm limit and the jobsite can accommodate the additional power and weight.

Product Specifications

Maximum Core Drilling Capacity	300 mm
Input Power	3,900 W
No-Load Speed	500 rpm
Product Series	Heavy Duty Series
Weight	25 kg

PM250DCD vs. PM300DCD Specifications

The required hole diameter is the clearest starting point when comparing the two models. The PM250DCD handles openings of up to 250 mm, while the PM300DCD adds 50 mm of drilling capacity and 700 W of input power.

No-load speed should be evaluated together with bit diameter, base material, reinforcement, water supply, and feed pressure. Confirm the full operating conditions and compatible core bit before selecting a model.

Find the Right Polymak Diamond Core Drill
for Your Project

Start with the maximum required hole diameter. The PM250DCD handles openings of up to 250 mm, while the PM300DCD increases the available capacity to 300 mm and provides higher listed input power.

This site features a wide variety of diamond core drills from various manufacturers, in addition to those from CONSEC. Please use this information to find the product that best suits your needs.

Features of Polymak Diamond Core Drills

Stand-Mounted Feed System for Controlled Drilling

The drilling unit mounts to a column and moves vertically through a handle-operated rack-and-gear mechanism. Once the base is securely anchored, this setup supports controlled feeding and helps maintain alignment during stationary drilling.

The instruction manual describes two ways to secure the stand: using a supporting mandrel or fastening the base with an expansion bolt. The appropriate method depends on the work surface, drilling direction, and site conditions.

Water-Fed Operation for Bit Cooling and Debris Removal

The manual specifies water-fed operation to cool the drill bit and flush drilling debris from the cutting area. Maintaining adequate water flow helps control heat and reduce the risk of damage to the bit and sealing components.

Operators should keep water away from the motor housing and electrical components. During upward or overhead drilling, the manual instructs users to collect the returning water rather than allowing it to enter or dampen the drill.

Mechanical Clutch and Overcurrent Protection

The documented design includes a mechanical friction clutch and an overcurrent protection switch. The clutch can disengage when the bit encounters excessive resistance, while the electrical protection is designed to interrupt operation during an overload condition.

These features do not replace proper installation and operating procedures. Operators should reduce feed pressure if motor speed drops, stop the tool if unusual heat or odors occur, and follow all safety instructions supplied with the equipment.

Applications and Jobsite Considerations

Polymak’s instruction manual identifies reinforced concrete, brick, and stone as drilling materials for these machines. It also lists construction, pipe installation, road and bridge engineering, quality-control work, and material sampling among their intended applications.

Openings for Pipes and Building Systems

Core drilling creates circular openings for plumbing, drainage, electrical conduit, and other building systems. Select the model based on the required finished diameter and the characteristics of the wall, floor, or structural element.

Construction and Infrastructure Work

The stand-mounted design supports drilling applications where the machine can be securely anchored to concrete or another appropriate surface. Potential applications include construction and road or bridge engineering, subject to project-specific engineering controls and safety requirements.

Material Sampling and Quality-Control Work

The equipment can also remove cylindrical samples from concrete, stone, and similar materials. Before drilling, confirm the required sample diameter, drilling depth, reinforcement conditions, and extraction method.

What Buyers Should Confirm Before Purchasing

The official product information does not identify a dedicated U.S. model, distributor network, service center, or electrical configuration. Buyers planning to operate a Polymak diamond core drill in the United States should confirm the following details before arranging shipment.

• Voltage: The instruction manual lists a rated voltage of 230 V. Confirm that the supplied machine is compatible with the available jobsite power source.
• Plug and circuit requirements: Ask which plug type, grounding arrangement, circuit capacity, and protective device the machine requires.
• Certifications: Confirm whether the exact model carries any certification required by the project owner, employer, authority having jurisdiction, or worksite.
• Model availability: Verify that the PM250DCD or PM300DCD can be shipped to the intended U.S. destination.
• Core-bit compatibility: Confirm the output connection, required bit diameter, drilling depth, and compatibility with locally available core bits.
• Shipping and import terms: Request details on freight, customs responsibilities, duties and taxes, estimated delivery time, and procedures for transit damage.
• Warranty service: Ask where warranty inspections and repairs would be performed for a machine operated in the United States.
• Spare parts: Confirm availability and lead times for brushes, seals, switches, bearings, gears, and other replacement components.

Polymak Maintenance, Warranty, and Support

Polymak’s product pages provide downloadable instruction manuals and spare-parts diagrams for both the PM250DCD and PM300DCD. These documents identify major assemblies and can support inspection, maintenance planning, and parts inquiries.

The instruction manual directs users to inspect the carbon brushes and commutator periodically, verify electrical and grounding conditions, replace worn sealing washers, lubricate connecting parts, and store the machine in a clean, dry location. Repairs involving internal electrical or mechanical components should be performed by an authorized service provider.

Polymak’s product pages state that its products are covered against defective workmanship and faulty materials for six months from the purchase date. The pages also note that warranty information varies by product, so buyers should request the terms for the specific model in writing before ordering.

For an overseas installation, confirm who will provide technical assistance, product training, preventive maintenance guidance, repair evaluation, and replacement parts.

About Polymak

Polymak Private Limited is based in Chennai, India, and supplies industrial products including power tools, abrasives, welding equipment, accessories, and fasteners. Its diamond core drill lineup includes the PM250DCD and PM300DCD models featured on this page.

The company provides product inquiry forms, downloadable documents, spare-parts diagrams, and contact channels through its official website. Buyers outside India should use these channels to confirm export availability and the applicable support terms.

Company Name	Polymak Private Limited
Head Office	Chennai, Tamil Nadu, India
Product Categories	Power tools, abrasives, welding equipment, accessories, and fasteners
Diamond Core Drill Models Featured	PM250DCD and PM300DCD
Official Inquiry Channels	Polymak website contact and business inquiry forms