The Bernardo DP3 manual rack and pinion press offers a solid, torsion-free steel structure, an effective force of 1,181 kg / 11,585 N with an adjustable 500 mm lever and a manual force of 60 kg, a working height of 300 mm, a column axis distance of 150 mm, a 37×37×435 mm spindle, and a Ø 185 mm rotary table with multiple openings (2 × Ø 24 mm, 1 × Ø 28 mm, 1 × Ø 40 mm). Suitable for inserting/extracting bearings, bushings, straightening medium shafts, bending, and light broaching. Weight 40 kg. Made in Austria, distributed in Italy by Krollit as official Bernardo distributor since 2007.
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Effective force (with 500 mm lever): 1,181 kg / 11,585 N
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Max workpiece height: 300 mm
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Column axis distance: 150 mm
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Rotary table: Ø 185 mm with 4 openings
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Spindle: 37 × 37 × 435 mm
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Structure: Solid torsion-free steel
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Weight: approx. 40 kg
Who uses the DP3 and for what
The Bernardo DP3 is the rack and pinion manual press from the DP family sized for workpieces up to 300 mm high, a typical choice for workshops that work on drive shafts, mechanical uprights, long profiles, and components that exceed the useful height of the DP2 (190 mm). The effective force of 1,181 kg with a 500 mm lever is dimensioned for inserting/extracting standard bearings and bushings, straightening medium shafts, bending thick wire, and light broaching. The Ø 185 mm rotary table with four openings (24, 28, 40 mm) handles components of various sizes without changing tooling. In Krollit customers' laboratories, it is chosen by mechanical workshops working on transmissions, engine and gearbox repairers, transmission component manufacturers, and maintenance workshops that regularly work on shafts and tall components.
Its place in the Bernardo range
In the DP family, the DP3 is the manual press for tall workpieces with intermediate dimensions. Below: DP1 (135 mm workpiece height, 11 kg) and DP2 (190 mm, 30 kg, superior force 1,285 kg). Above: D5 (445 mm, 160 kg cast iron, force 1,560 kg). The practical difference between DP3 and DP2: the DP3 sacrifices a bit of force (1,181 vs 1,285 kg) to offer an additional 110 mm of usable workpiece height. For workshops that primarily work on bearings on short shafts, the DP2 is more suitable: it has superior force with lower weight. For workshops that regularly work on tall workpieces (shafts, uprights, profiles), the DP3 is a must: the DP2 with its 190 mm usable height cannot accommodate them. For workpieces over 300 mm in height, move up to the D5 with its 445 mm usable height.
Krollit Logistics and Support
Bernardo shipping in 5-9 working days (7 days to the South). At 40 kg, it is shipped in protective packaging and can be handled by one person. It must be fixed to a sturdy workbench using the mounting holes. Original Bernardo spare parts available from stock with 3-5 working day shipping. Customer support available in Italian.
Who is the DP3 for?
| Profile |
Compatibility |
Reason |
| Mechanically enthusiastic hobbyist |
Suitable |
For advanced hobby use on shafts and tall components. For bearings on standard shafts, the DP2 with superior force may be preferable. |
| Mechanical workshop working on shafts |
Recommended |
300 mm usable workpiece height handles standard drive shafts, mechanical uprights, long profiles that the DP2 cannot accommodate. 1,181 kg force is adequate for standard bearings. |
| Engine / transmission component repairer |
Recommended |
For disassembling and reassembling bearings on transmission components. Rotary table with multiple openings speeds up operation changes for bearings of different sizes. |
Not suitable for: operations on workpieces over 300 mm in height (consider D5 with 445 mm); applications requiring forces over 1.2 tons (D5 with 1.56 tons); high-cadence series production; construction site use without a stable support bench.
Working Capacity
| Specification |
Value |
| Max workpiece height |
300 mm |
| Column axis distance |
150 mm |
| Manual force (on lever) |
60 kg / 588 N |
| Effective force on workpiece |
1,181 kg / 11,585 N |
| Lever length |
500 mm |
Spindle and Rotary Table
| Specification |
Value |
| Spindle dimensions |
37 × 37 × 435 mm |
| Rotary table diameter |
185 mm |
| Rotary table openings |
2 × Ø 24 mm / 1 × Ø 28 mm / 1 × Ø 40 mm |
Dimensions and Weight
| Specification |
Value |
| Machine dimensions (L × W × H) |
250 × 460 × 560 mm |
| Net weight |
approx. 40 kg |
| Frame material |
Solid torsion-free steel |
Compliance
| Specification |
Value |
| Marking |
CE |
Standard Equipment
- Bernardo DP 3 manual press (machine body)
- Rotary table with multiple openings
- Adjustable lever
Frequently Asked Questions
Why does the DP3 have less force than the DP2 despite being larger?
The lever-rack ratio is designed differently: the DP3 prioritizes usable workpiece height (300 mm), accepting slightly lower force. It's a design trade-off choice.
The DP3's rack is longer than the DP2's to support taller workpieces, and this changes the internal mechanical ratio. The DP3 with a 500 mm lever and long rack has a ratio of 19.7:1, slightly lower than the DP2 (21.4:1 with a 450 mm lever). For applications requiring maximum force, the DP2 is preferable; for applications requiring usable height, the DP3 is a must.
What type of shafts can I work on?
Standard drive shafts up to 300 mm in length (with bearings) or longer components for the pressing part only. For shafts with total bearings up to 200-250 mm in length, the DP3 is correctly sized.
The 300 mm usable height is the distance between the table and the spindle in the upper position: the workpiece must fit into this space. For shafts with lateral protrusions (keyway, integral gears), the effective usable height is reduced. Check the dimensions of the assembled component before choosing the press.
Can I use the DP3 to mount bearings on shafts without damaging them?
Yes, with the correct technique. Use specific pressing tools (guide bushings, pressure rings) that distribute the force on the inner ring of the bearing, not on the rollers or the outer ring.
Inserting bearings without damaging them is a standard mechanical technique: the press applies the force, but it is the intermediate tooling that distributes it correctly. Without adequate tooling, any press risks damaging the bearings. The DP3 with its multiple openings on the rotary table allows for flexible use of various sized tooling.
Does it need to be fixed to the workbench?
Yes, with the mounting holes in the base. The 40 kg weight is not sufficient to maintain stability during significant pressing operations.
The workbench must be sized to withstand lateral and lifting forces during pressing. Standard fastening bolts are sufficient. For workshops without an adequate bench, an optional cast iron base is available for semi-stationary use. For temporary or portable use, consider DP1 or DP2.
Which among DP1, DP2, DP3, D5 makes sense for my workshop?
It depends on the typical workpiece height and the required force. In summary: DP1 for small workpieces under 135 mm (force 1,140 kg, weight 11 kg); DP2 for standard workpieces under 190 mm with superior force (1,285 kg, weight 30 kg); DP3 for tall workpieces under 300 mm (force 1,181 kg, weight 40 kg); D5 for tall workpieces under 445 mm with superior force (1,560 kg, weight 160 kg cast iron).
The choice is not automatic: workshops with varied work may find it makes sense to consider two complementary presses (e.g., DP1 for precision + DP3 for tall workpieces) instead of a single compromised one. The price of DPs is contained, and each is specific to a type of application. For general workshops with only one tool, the DP2 is the best balance between force, workpiece height, and footprint.
