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Engineered for precision and flexibility, this hydraulic rocker drill press (cross-arm drilling machine) combines a rotary column with a laterally moving spindle box. It handles steel (50-60kgf/mm²) and cast iron (HB=200) up to Ø50mm, while also performing reaming, countersinking, and tapping. With high rigidity, wide speed range, low noise, and centralized controls, it is the ideal choice for single-piece, low-volume, and maintenance workshops, as well as mass production with fixtures.

Key Highlights:

Ø50mm Drilling Capacity: Robust performance on steel and cast iron.
Swiveling Radial Arm: Spindle box moves laterally; arm rotates with column for extensive coverage.
Multi-Functional: Drilling, reaming, countersinking, tapping in one setup.
Hydraulic Efficiency: Smooth operation, high rigidity, low noise, wide speed range.
Workshop Versatility: Perfect for machinery manufacturing, equipment repair, and tool maintenance.

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Product Description

1. Overview

The Hydraulic Radial Arm Drilling Machine (also known as a cross-arm drilling machine) is a universal machine tool designed for processing small and medium-sized workpieces. Its spindle box moves laterally along the rocker arm, which rotates around a sturdy column, providing a large working area without moving the workpiece. This design facilitates centralized operation, ensures high efficiency, and simplifies maintenance, making it indispensable for mechanical manufacturing and repair shops.

2. Key Performance Parameters

Parameter	Specification
Machine Type	Hydraulic Radial Arm Drilling Machine
Max. Drilling Diameter	Ø50mm (Steel: 50-60kgf/mm²; Cast Iron: HB=200)
Spindle Travel	Lateral on Rocker Arm + Rotary Column
Operations	Drilling, Reaming, Countersinking, Tapping
Spindle Speed	Wide Range (Multi-speed)
Rigidity & Precision	High Rigidity, Good Accuracy, Low Noise
Control	Centralized Operation, Hydraulic System
Workpiece Suitability	Small/Medium Parts, Machinery Manufacturing & Repair
Production Mode	Single-Piece, Low-Volume, Repair Shops (Fixtures for Mass Production)
Main Features	High Efficiency, Novel Design, Easy Maintenance

3. Core Advantages

① Extensive Machining Coverage

The rotary column and laterally moving spindle box allow the arm to swivel and the head to traverse, covering large or irregular workpieces. Ideal for drilling at various angles and positions without repositioning.

② Heavy-Duty Ø50mm Capacity

Drills up to Ø50mm in steel (50-60kgf/mm²) and cast iron (HB=200). Beyond drilling, it performs reaming, countersinking, and tapping, reducing the need for multiple machines.

③ Hydraulic Precision & Stability

Hydraulic system ensures smooth feeding, high rigidity, and low noise. Wide speed range adapts to different materials and tool diameters, maintaining precision and tool life.

④ Centralized & User-Friendly

Novel appearance with centralized controls for easy operation. High efficiency and good rigidity make it suitable for long hours in maintenance and production environments.

⑤ Adaptable for Any Batch Size

Excellent for single-piece and low-volume workshops (especially repair tools). When equipped with drilling fixtures, it seamlessly transitions to mass production, offering unmatched versatility.

4. Application Scope

Machinery Manufacturing: Drilling, tapping, and boring on structural parts.
Equipment Maintenance & Repair: Ideal for tool rooms, repair shops, and field servicing.
Metal Fabrication: Steel and cast iron component processing.
Batch Production: With custom fixtures, supports high-volume manufacturing.

→ Contact our engineering team for a detailed quotation, technical drawing, or factory test video.