The Bernardo KBM 32 fixed column drill is the compact model in the KBM range with an MT 4 taper for tools up to Ø 32 mm, with a drilling capacity in steel up to Ø 32 mm and threading up to M22 with automatic reversal. Technical specifications: Morse taper MT 4, 9 spindle speeds 50-2,000 rpm (stepped), automatic spindle feed with 9 ranges 0.056-1.8 mm/rev, 2.2 kW motor with 160 Nm torque, feed force 9,000 N. Cast iron table 550 × 400 mm with 14 mm T-slots, table lift 300 mm, spindle-column distance 280 mm, max spindle-table distance 680 mm. Cast iron structure, weight 950 kg, machine dimensions 700 × 960 × 2,340 mm. Distributed in Italy by Krollit as an official Bernardo distributor since 2007.
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Steel drilling capacity: Ø 32 mm
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Threading capacity: M22 with automatic reversal
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Morse taper: MT 4
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Spindle speed: 9 speeds 50-2,000 rpm
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Spindle torque: 160 Nm
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Feed force: 9,000 N
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Spindle stroke: 200 mm
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Cast iron table: 550 × 400 mm with 14 mm T-slots
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Table lift: 300 mm
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Motor: 2.2 kW at 400V three-phase
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Weight: 950 kg
Who uses the KBM 32 and for what
The Bernardo KBM 32 is an industrial fixed column drill sized for mechanical workshops and industrial production with drilling in steel up to Ø 32 mm and threading up to M22. Key design feature: the massive cast iron structure (weight 950 kg) with adjustable dovetail guides offers stability for precision drilling. The 2.2 kW motor with 160 Nm torque and 9,000 N feed force develops the necessary power for through-drilling on mild structural steel, medium alloy steels (C45, 39NiCrMo3), cast iron, aluminum and light alloys. The automatic spindle feed with 9 ranges (0.056-1.8 mm/rev) allows automated execution of long holes (over 50 mm deep) without operator fatigue. The threading device with automatic reversal allows M22 threading without the need for manual spindle stop: the motor rotation automatically reverses when the set depth is reached. In Krollit customer laboratories, KBM 25 and KBM 32 drills are chosen by mechanical workshops with series production of medium-sized parts, technical schools and professional training laboratories, industrial maintenance workshops for component repairs, metal structural workshops for assembly holes on welded structures.
Its place in the Bernardo range
The Bernardo drill range is organized into 3 main categories: bench drills (DMT 20, BM, TB) for craft workshops with occasional use; fixed column drills (KBM 25/32/40/50/63/80) for industrial workshops with high-capacity mechanical production; gear drills (GB 30 TV) for precision workshops requiring superior concentricity. The KBM 25 and KBM 32 are the most compact models in the KBM range, sharing the frame (table 550×400 mm, weight 950 kg) and motor (2.2 kW, 160 Nm torque). Differences: the KBM 25 has a max drilling capacity of Ø 25 mm with MT 3 taper and M16 threading; the KBM 32 has a drilling capacity of Ø 32 mm with MT 4 taper and M22 threading. For workshops primarily using tools below Ø 25 mm, the KBM 25 is the correct choice in terms of quality/price; for workshops with tools up to Ø 32 mm, the KBM 32 is correctly sized with the same structure but a larger taper. For higher capacities (Ø 40 mm), the KBM 40/50 models (medium category with 3-4 kW motor and 350 Nm torque) are correctly sized.
Krollit Logistics and Support
Bernardo shipping in 5-9 working days (7 days to the South). Due to significant weight, a pallet truck or crane is required for unloading and handling. HSS drill bits in MT tapers, milling chucks, threading devices, LED lamps, coolant pumps, original Bernardo spare parts (belts, gears, gaskets, motors) available from stock with 3-5 working day shipping. Customer support available in Italian.
Who is the KBM 32 for?
| Profile |
Compatibility |
Reason |
| Hobbyist or workshop with occasional use |
Not suitable |
Industrial machine weighing 950 kg requiring a 400V three-phase line. For occasional use, DMT 20 bench drills or BM/TB column drills are correctly sized. |
| Mechanical workshop with drilling up to Ø 32 mm |
Recommended |
MT 4 taper sized for tools up to Ø 32 mm. Automatic feed 9 ranges for productivity on multiple holes. M22 threading with automatic reversal. |
| Technical school / professional training laboratory |
Recommended |
Robust machine for use by multiple students, cast iron structure with dovetail guides. Spindle speed 50-2,000 rpm covers most didactic materials. |
Not suitable for: workshops without an adequate industrial 400V three-phase line; environments without space for machine dimensions (700 × 960 × 2,340 mm); precision drilling with superior concentricity (for concentricity ≤ 0.02 mm, the GB 30 TV or CNC drills are correctly sized); occasional hobbyist use (the machine is oversized, consider DMT 20 or BM/TB bench drills from the range).
Processing Capacity
| Specification |
Value |
| Steel drilling capacity |
Ø 32 mm |
| Max threading capacity |
M22 |
| Morse taper |
MT 4 |
Speeds and Feeds
| Specification |
Value |
| Spindle speed |
9 speeds 50-2,000 rpm |
| Spindle torque |
160 Nm |
| Spindle stroke |
200 mm |
| Drill head stroke |
200 mm |
| Spindle feed |
9 ranges 0.056-1.8 mm/rev |
| Feed force |
9,000 N |
Table and Working Dimensions
| Specification |
Value |
| Table dimensions |
550 × 400 mm |
| T-slots |
14 mm |
| Table lift |
300 mm |
| Spindle-column distance |
280 mm |
| Max spindle-table distance |
680 mm |
Motor and Power Supply
| Specification |
Value |
| Motor power |
2.2 kW |
| Voltage |
400V three-phase / 50 Hz |
Dimensions and Weight
| Specification |
Value |
| Machine dimensions (L × D × H) |
700 × 960 × 2,340 mm |
| Weight |
950 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery 2006/42/EC |
Standard Equipment
- Bernardo KBM 32 drill
- Integrated cooling device
- Threading device with automatic reversal
- Right/left rotation (R/L)
- Integrated LED work light
- Morse taper sleeve
- Height-adjustable CE-compliant guard
- Set of service tools
- User manual in Italian
Frequently Asked Questions
What is the difference between MT 4 taper and other tapers?
The Morse taper MT 4 is sized for tools with a diameter up to Ø 32 mm. For tools with a larger diameter, a larger Morse taper is required (MT 4 for Ø 32-40 mm, MT 5 for Ø 40-63 mm, MT 6 for Ø 63-80 mm).
The Morse taper is an international standard that defines the conical coupling between the spindle and the tool: the taper is designed for self-clamping during rotation. HSS drill bits, milling cutters, reamers, and reduced taper sleeves are available in all MT tapers. For B16 or B18 tools (cylindrical with screw clamping), a drill chuck with the machine's MT shank is required: professional self-tightening chucks are recommended for quick and safe tool changes.
How does the automatic spindle feed work?
The automatic feed lowers the spindle at a constant speed, adjustable according to the material, eliminating the physical effort of the operator on the manual lever. The 9 feed ranges (0.056-1.8 mm/rev) cover different materials: 0.056-0.1 mm/rev for hard steels, 0.1-0.3 mm/rev for alloy steels, 0.3-0.7 mm/rev for mild steels, 0.7-1.8 mm/rev for aluminum and light alloys.
Correct feed is crucial for: drill bit life (excessive feed causes breakage), hole quality (reduced feed causes slow work and high burr), machine productivity (optimal feed significantly reduces drilling times). For series production, automatic feed allows the execution of multiple identical holes without manual intervention: a crucial feature for productivity.
Does M22 threading require a specific device?
Yes, and it is included as standard equipment. The threading device with automatic reversal allows M22 threading without the need for manual spindle stop: the direction of rotation automatically reverses when the set depth is reached.
Standard threading procedure: mount the tap in the MT tap holder sleeve, adjust the depth stop, position the workpiece on the table with threading lubricating oil. The operator starts the machine, the spindle rotates forward cutting the thread, upon reaching the depth, the direction automatically reverses, retracting the tap. Specific oil for threading on steel (e.g., CutCool, Tapping Fluid) is recommended for thread quality and tap life.
Can I perform precision drilling with this drill?
For standard precision (concentricity 0.05-0.1 mm), yes. For higher precision (concentricity ≤ 0.02 mm), gear drills (GB 30 TV) or CNC drills with precision spindles are correctly sized.
KBM fixed column drills have belt drive with typical industry standard concentricity. For higher precision applications (precision reaming, drilling for H7 fits), the GB 30 TV with hardened and ground gear drive offers concentricity ≤ 0.02 mm. For extremely precise industrial applications (concentricity below 0.01 mm), dedicated boring machines or CNC machining centers are required.
What electrical power supply does this machine need?
400V three-phase line with adequate cable cross-section for the 2.2 kW motor: typically 4 mm² up to 30 meters, 6 mm² over 30 meters. Dedicated 16A circuit breaker.
For workshops without a three-phase line, electrical upgrade is necessary (typical cost €500-1,500 for a new three-phase meter + wiring + circuit breaker). For workshops with a three-phase line but undersized cables, the cost is limited to dedicated wiring (€200-500). Pre-purchase verification recommended: contact a qualified electrician to check the availability of power on the existing meter and the current cable cross-sections.
