The Bernardo HM 25 Top is a mortiser for professional use, with a capacity of 76 mm, a 0.75 kW (1.0 HP) motor, and a weight of 110 kg. Krollit, official Bernardo distributor since 2007.
- Max chisel size: 25.4 mm
- Spindle stroke: 230 mm
- Max mortising depth: 76 mm
- Max workpiece height: 270 mm
- Max workpiece width: 185 mm
- Table size: 540 x 190 mm
Who uses the HM 25 Top and for what
Professional carpentry shops and furniture manufacturers use the HM 25 Top to create mortises for tenon joints on doors, windows, and furniture, with precise interlocking on rails and stiles.
Its place in the Bernardo range
The Bernardo HM 25 Top is part of Bernardo's mortising machine range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance levels: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for selection assistance.
Krollit Logistics and Support
Machine shipping in 5-9 business days (7 days for Southern Italy). For spare parts and accessories, shipping in 3-5 business days from Krollit warehouse. Customer support in Italian available for technical documentation, product sheets, and spare parts order management. Krollit has been an official distributor since 2007.
Who is the HM 25 Top for?
The HM 25 Top is recommended for the following professional profiles:
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Professional carpentry shops and furniture manufacturers: creating mortises for tenon joints on doors, windows, and furniture.
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Window and door manufacturers: working on rails and stiles with precise interlocking.
Not suitable for: mortises on metal or plastic (machine dedicated to wood: different processes are needed for other materials).
Processing capacity
| Spindle stroke |
230 mm |
| Max mortising depth |
76 mm |
| Max workpiece width |
185 mm |
| Table travel (x/y) |
280 / 135 mm |
Table, dimensions, and geometry
| Max chisel size |
25.4 mm |
| Max workpiece height |
270 mm |
| Table size |
540 x 190 mm |
| Table tilt (forward/backward) |
±22.5° |
| Machine dimensions (LxWxH) |
570 x 650 x 1115 mm |
| Weight |
110 kg |
Other specifications
| Spindle head tilt |
±22.5° |
| Rotation speed |
1400 rpm |
| Motor power |
0.75 kW (1.0 HP) |
| Voltage |
230 V |
Frequently Asked Questions
What can the HM 25 Top work on?
It creates rectangular mortises for tenon-mortise joints on solid wood, plywood, and derived panels.
Bernardo HM square chisel mortisers allow direct creation of right-angle mortises, without the need for manual finishing. Typical applications: door and window frames, chairs, furniture, and structural assemblies.
What chisel sizes does it support?
Typically chisels from 6 to 25 mm wide. Check the "drilling capacity" or "mortising capacity" in the technical table.
Bernardo HM chisels are dedicated accessories with a cylindrical shank and a hardened hollow point. Krollit supplies original spare parts compatible with the HM 12, HM 25, and HM 30 series.
Is the head tiltable or swiveling?
It depends on the model: HM 25 has a 180° swiveling head, HM 25 TOP has a head tiltable ±22.5° right/left.
The swiveling head allows working on large pieces such as doors and frames from the back. The tilting head allows angled mortises for mitered assemblies.
What power supply does it require?
The HM 12, HM 25, and HM 30 models are equipped with a 0.75 kW single-phase 230 V motor. See "Voltage" in the technical table.
The single-phase power supply makes these mortisers usable even in workshops without a three-phase line. However, the machine still requires dedicated differential protection.
How much does the machine weigh?
See the "Weight" data in the technical table. Typically 100 kg (HM 25) or 110 kg (HM 25 TOP).
The high cast iron mass provides rigidity during mortising, reducing vibrations and improving accuracy. For handling and installation, a hydraulic trolley or the help of a second operator is recommended.
