Product Overview

The BORTECH 306–Z BoreWelder solves the expensive problem of repairing worn bores on heavy earth moving and construction equipment. It's portable, weighing only 22 pounds, is easy to set up, and thus moves easily to the repair site – whether in the field or in the shop.

The BoreWelder can be mounted on the worn part and can fit inside the bore to be repaired. It offers both rotary and axial motion. As the torch rotates, it deposits one continuous layer of metal inside the bore. A variety of torches allows buildup of bores from .5" to 54" (1.3 cm to 137 cm). Our larger model – Model 1202 – can build up bores from 12" to 144" (30.5 cm to 365.7 cm).

The 306 system now incorporates as standard an autoskip function which allows the operator to designate a portion of the piece not to be welded, such as keyways or grease fittings. This feature is also extremely useful for out of round bores.

The BoreWelder system was developed in the early 1980s by Rees Acheson, Bortech's chief engineer, while he himself was involved in the repair and maintenance of heavy earth moving equipment. Since its first sale in 1989, the 306-Z model has been used in hundreds of applications in steel mills, construction, power generating plants, petroleum refining, and the like.

With the 306-Z, the operator has a single point of control for all weld parameters and functions. Rotation speed, step size, amperage (wire feed speed), gas purge, voltage, contactor on/off and weld direction can all be adjusted at the Bortech control box. The controls are continuously accessible via knobs and dials.

Features

• Portable
• Easy setup
• 24 function control box
• Can reach 5 feet into the bore
• Offers full range of bore build-up torches
• Programmable weld/no weld zones
• Radial face torch, trammel torch, and conical seat torch available
• Easily interfaces with all major brand boring bars
• One year full warranty
• Support available by telephone, fax, and field visits
• Instruction available by factory-trained personnel
• Orders shipped within 24 hours of receipt

Specifications

1. Welding Process: Metal--inert--gas (MIG)
2. Wire Diameter Range: .030" to .045" (.8 mm to 1.2 mm)
3. Buildup Diameter Ranges (standard model):
   • Bore: .88" to 27" (2.2 cm to 68.8 cm)
   • Outside: 0 to 14" (0 cm to 35.6 cm)
   • Face: 0 to 20" 0 to 50.8cm)
4. Unsupported Torch Reach: 60" (1.5 m)
5. Length of Stroke: 6.3" (15.2 cm) and 12.3" (312.4 cm)
6. Step Range: .040" to .220" (1 mm to 5.6 mm)
7. Maximum Continuous Welding Current: 175A
8. Welding Power Required: Constant Voltage (CV)
9. Control Box Power Requirements: 120v 50/60Hz ac (220v model also available)
10. Remote Voltage and Contactor Control: Provided
11. Typical Weld Voltage Operating Range (short arc/.035 wire): 16v to 17.5 volts
12. Component Weights:
    • Borewelder: 22 lb (9.4 kg)
    • Control Box: 10 lb (4.5 kg)
    • Wire Feeder: 32 lb (14.5 kg)

Covered under U.S. Patent #4,687,899, 4,873,419, 4,892,990, and 4,952,769.

Power Supply Compatibility Information

Numerous welding power supplies can be used with the 306-Z BoreWelder. In order to use the full potential of the 306-P, you need a continuous welding current of about 200 amps. The power supply must be of the constant voltage (CV) type (the type suitable for MIG welding), and it should have remote voltage control capabilities.

The 306-Z comes equipped with a power supply control cable with a connector on one end for attachment to the control box. The other end must be attached directly to the power supply, or to a connector that will mate properly with the power supply to be used.

The 306-Z can be interfaced with power supplies that provide contactor actuation current, and those that do not. For this reason, it is important for you to know the requirements of the power supply to be interfaced with the 306-Z before trying the attachment.