PR4P Self Feed Drilling Unit


Self feed drilling unit is a air-feed and electric rotation drilling unit that lines up electric motor type with output of 1.1 kW, features pneumatic feed drilling with rapid advance, cutting feed speed is freely controlled by hydro speed regulator.

Model: PR4P
No-load speed: 500-6000R/M
Drilling diameter: Aluminum: 5-19mm / Cast iron: 1.5-15.5mm / Steel: 1.5-13mm
Spindle stroke: 100mm/150mm
Cutting feed stroke: 40mm, 60mm, 80mm, 100mm, 130mm
Motor power: 1.1kw
Feed driving: 1800N
Air consumption: 6-10L

PURROS® Self Feed Drilling Unit PR4P Size

PURROS® Self Feeding Drilling Unit PR4P Parameter

1. The selection of models should be based on the shape of the work, material, cutting characteristics, diameter and material of tools, rotation speed (cutting speed), etc.
2. The drilling capacity displayed in the above table is based on values representing a drilling depth of two times the diameter of the drill.
3. The standard attachment for the hydro speed regulator is RB-3140. Please specify an optional Hydro Speed Regulator if required. (Optional Hydro Speed Regulator Models: RB-3160, R-3180A)
4. Maximum weight of the attachment that can be mounted when machining downwards is 15 kg.
5. Make sure to use a collet chuck or spindle nose when the hardness of carbide drills and tool shanks is higher than that of general HSS (high-speed steel) drills.

PURROS® All Self Feed Drilling Units Parameter

Click in:  PR3P  PR32P  PR5P PR6P


1. High-precision
Core technology of Electro Pneumatic Drilling Units is played very well, which completely strengthened the versatility of the product and thus made the high precision of Drilling Units reflected extremely.

2. High rigidity
Axial rail structure is used, which greatly improved the overall rigidity and fully guaranteed the stability of the hole machining.

3. High performance
A unique dual sealing structure and round body that is easy and convenient to be installed are available at the end of spindle, which can meet variety of holes machining requirement.


Products can be equipped with Self Feed Drilling Units

1. PURROS® Hydro Speed Regulators
Speed can be adjusted arbitrarily from lower to higher by a hydraulic feeding speed control device.

2. PURROS® Multiple Spindle Heads
Multiple Spindle Heads can be amounted, which can achieve high efficiency drilling and meet different requirements of machining spindle and spindle spacing. Extensive Multiple Spindle Heads sizes are available in PURROS®.

3. PURROS® Unit Installation Stands
Such desktop support is suitable for any machining directions, which can fix the Drilling Units angle freely.


PURROS® Special Purpose Machines

Multiple Drilling or Tapping Machine

Multi Station Drilling or Tapping Machine

Rotary Index Drives Special Purpose Machine

Sliding Table Special Purpose Machine

Rotary Table Special Purpose Machine


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