Rectifieuses pour engrenages HOFLER PORTA 3500

Max. wheel diameter: 3500 mm Max. module: 36 Dear Sirs,

We are pleased to offer a rare opportunity to acquire a HÖFLER Porta 3500 CNC Gear Grinding Machine, a high-capacity later-generation traveling gantry machine designed for precision spur and helical gear grinding, internal and external grinding applications.

The machine is offered As Is” with limited use history and reasonable flexibility on pricing.

Machine Overview

The HÖFLER Porta 3500 is a later-generation traveling gantry CNC gear grinding machine designed for the precision finish grinding of large external and internal spur and helical gears. It is capable of grinding gears up to 3,500 mm (137.8”) diameter with exceptional accuracy and productivity.
Serial Number: 928
Year of Manufacture: 2007
The machine has accumulated only approximately 6,800 operating hours since installation and is considered to have very limited use.

Main Technical Specifications

Maximum external gear diameter: 3,500 mm (137.8”)
Maximum internal gear diameter: 3,500 mm (137.8”)
Minimum internal gear diameter: 800 mm (31.5”)
Maximum module: 36 Module (0.7 DP)
Maximum tooth profile height: 80 mm
Maximum helix angle: ±45°
Maximum workpiece weight: 40,000 kg (88,000 lbs)
Machine table diameter: 2,350 mm
Total machine weight: 90,000 kg (198,000 lbs)
Installed power: Approximately 200 kVA

Machine Highlights

Later-generation traveling gantry design with mineral cast structure for exceptional rigidity and thermal stability
Direct-drive torque motor rotary table with hydrostatic bearings for backlash-free positioning
SIEMENS SINUMERIK 840D CNC control with HÖFLER GearPro software
Fully automatic grinding wheel balancing system
Automatic touch grinding and stock determination
High-precision integrated gear inspection system
CNC-controlled dressing system with diamond dressing rolls
Hydraulic grinding spindle with 45 kW drive
Automatic lubrication and temperature-controlled hydraulic and grinding oil systems
Complete machine enclosure with oil mist extraction
Automatic water chiller for thermal stability

Special Equipment

Integrated gear inspection system for profile, lead, pitch and spacing measurement
Software for grinding special tooth geometries and non-involute profiles
Double-helical (herringbone) gear grinding software
Runout alignment grinding system
Thrust bearing inspection system
Emergency power backup system
Vacuum grinding oil filtration system with oil chiller
Attachment for internal, external and face grinding

Control System

SIEMENS SINUMERIK 840D CNC
SIEMENS SIMODRIVE 611D digital drives
Windows-based HÖFLER GearPro operating software
Job preparation software for offline programming
Automatic profile and lead correction
Storage capacity for more than 1,000 grinding programs

Documentation

The machine is supplied with:

Complete operating manuals
Maintenance manuals
Electrical documentation
Parts manuals
Machine drawings
Available technical documentation

Condition Information

The main hydraulic drive motor has been fully refurbished and is included with the machine; however, it has not yet been installed. This currently limits machine movement and operation.

After installation and commissioning of the hydraulic drive motor, the machine has the potential to return to full operating condition.

The machine is offered in its current As Is” condition, and reasonable offers will be considered.


Price: on request

Additional Support Services

We can provide:

Packing list for shipping preparation
Assistance with professional dismantling and export packing
Optional sea freight arrangements under a separate agreement

The HÖFLER-KLINGELNBERG Service Department may provide supporting assistance, including:

Troubleshooting support
Assistance with settings and adjustments
Technical guidance based on available documentation
Provision of existing technical documents and machine information related to the Porta 3500-928 model

All documentation and technical support are provided for reference and assistance purposes only.

For customers in China, installation support can also be arranged under a separate service agreement.

Please contact us for additional technical information, inspection arrangements, or commercial discussions.
seller offer No. resale 169881274