2M2150×6m CNC Deep Hole Honing Machine

High-Precision Horizontal Honing Machine for Hydraulic Cylinders and Long Bore Components

1. Product Overview

The 2M2150×6m CNC Deep Hole Honing Machine is designed for precision finishing of long cylindrical deep holes, particularly in hydraulic cylinders, hydraulic tubes, and other cylindrical workpieces.

With a maximum honing depth of 6,000 mm and a bore diameter range of Φ50–500 mm, this machine provides reliable honing performance for large and long-bore components.

Equipped with a Siemens 828D CNC control system and servo-controlled honing head expansion, the machine supports constant-pressure feeding, constant-quantity feeding, and combined feeding modes. These functions help improve machining accuracy, surface finish, and production efficiency.

The machine can perform both full-length honing and localized honing. Localized honing allows operators to correct taper, ovality, and localized bore diameter deviations.

2. Key Features and Advantages

1. Wide Machining Capacity

Honing diameter range: Φ50–500 mm

Maximum honing depth: 6,000 mm

Maximum workpiece length: 6,000 mm

Maximum workpiece weight: 8 tons

Suitable for machining long hydraulic cylinders and other large cylindrical deep-hole components.

2. Servo-Controlled Honing Head Expansion

The honing head expansion is controlled by a servo motor, allowing both constant-pressure and constant-quantity feeding modes.

Constant-pressure feeding maintains a consistent total feeding force during honing.

Constant-quantity feeding provides controlled and predetermined expansion of the honing stones.

Combined feeding mode integrates the advantages of both methods to improve honing accuracy and efficiency.

These feeding modes help achieve high-quality bore surfaces and improve the correction of geometric errors.

3. Siemens 828D CNC Control System

The machine adopts the Siemens 828D CNC system with a touchscreen human-machine interface.

Operators can conveniently set and adjust:

Honing reciprocating speed

Honing spindle speed

Honing head expansion and feeding parameters

The control panel is mounted on the machine bed and can be manually rotated for convenient operation.

4. Dual Oil Supply System

The machine supports two honing oil supply methods:

External oil supply: Honing oil is delivered directly into the workpiece through the external oil supply system.

Internal oil supply: Honing oil flows through the internal passage of the honing bar and reaches the honing head.

Both oil supply methods help provide lubrication and cooling during machining. Operators can select the required supply method through the operating station.

5. Heavy-Duty Machine Bed Construction

The machine bed is manufactured using resin-sand casting technology, followed by normalizing and two aging treatments to relieve internal stress and improve structural stability.

Linear guideways are installed for smooth and stable reciprocating movement of the honing head assembly.

The rack-and-pinion transmission system is precision-machined and heat-treated to ensure stable feeding performance.

6. Reliable Honing Spindle Drive

The honing spindle is driven by a servo motor through a precision gear reduction system.

The gears are precision-ground and induction-hardened, with a surface hardness of HRC 48–52, providing high strength, wear resistance, and durability.

The spindle is supported by a combination of cylindrical roller bearings and thrust ball bearings to withstand radial and axial loads.

7. Flexible Workpiece Clamping

The machine is equipped with two adjustable V-shaped workpiece supports.

The V-shaped supports can be manually adjusted to accommodate different workpiece diameters. A chain-type pipe clamp secures the workpiece during machining.

Anti-slip support plates help prevent workpiece rotation during honing.

3. Technical Specifications

Item	Specification
Model	2M2150×6m
Honing diameter range	Φ50–500 mm
Maximum honing depth	6,000 mm
Maximum workpiece length	6,000 mm
Workpiece outer diameter range	Φ80–650 mm
Maximum workpiece weight	8,000 kg
Z-axis feeding speed	1–40 m/min, stepless
Z-axis feed motor torque/power	35 Nm / 5.5 kW
Honing spindle speed	10–130 rpm, stepless
Honing spindle motor power	15 kW
Internal oil supply maximum flow	40 L/min
Internal oil supply motor power	0.55 kW
External oil supply maximum flow	60 L/min
External oil supply motor power	0.25 kW
Coolant tank capacity	950 L
Filtration accuracy	20 μm
Honing head expansion servo motor	2.39 Nm / 0.75 kW
Machine center height	514 mm
Total machine power	24 kW
CNC control system	Siemens 828D

4. Machining Accuracy

Item	Specification
Bore diameter accuracy	IT7–IT8
Surface roughness	Ra 0.2–0.4 μm

The machine is designed to achieve high bore accuracy and excellent surface quality for precision deep-hole honing applications.

6. Standard Accessories

The standard machine configuration includes:

Machine bed

Honing spindle box

Two sets of workpiece supports

Honing bar supports

Gear and rack transmission system

Coolant supply and filtration system

Siemens CNC control system

Electrical cabinet

Working light

Operation manual

Optional accessories:

Honing tools

Auxiliary tooling and fixtures

Honing oil

Alternative CNC control systems

7. Applications

The 2M2150×6m CNC Deep Hole Honing Machine is suitable for precision honing of:

Hydraulic cylinder barrels

Hydraulic tubes

Pneumatic cylinders

Long cylindrical bores

Industrial cylinder components

Other large-diameter, long-bore cylindrical workpieces

It is particularly suitable for manufacturers requiring accurate bore dimensions, improved surface finish, and reliable machining performance in long-hole applications.

8. Installation, Commissioning and Technical Support

Guanlu provides professional machine installation and commissioning services.

Our technical team can provide on-site mechanical and electrical installation, machine adjustment, commissioning, and operator training.

A three-working-day training program is provided for the customer's programming, operation, and maintenance personnel, including guidance on trial production of typical workpieces.

Pre-acceptance is conducted at the manufacturer's factory, followed by final acceptance at the customer's site.

 

Contact: Lilian Lee
Whatsapp: +8619819312517
Email: drilling@dzguanlu.com

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