E8000 | The Ultimate Drilling Machine

Unibor E8000 Magnetic Drill — 2000W Ultimate Drilling Machine with 4" Cutter Capacity

The Unibor E8000 is a professional-grade magnetic drilling machine engineered for the most demanding ferrous metal drilling applications in fabrication, construction, railways, and petrochemical environments. Powered by a 2000W variable speed motor and backed by a 4,500 lb magnet adhesion force, it is Unibor's largest capacity mag drill and is designed to handle extreme material thicknesses and large-diameter holes with precision. With a 4" cutter diameter and 4" depth of cut, the E8000 delivers performance that surpasses standard portable mag drills, making it the premier choice for contractors and trades professionals tackling the toughest structural steel jobs. The machine is CSA approved and ships with a comprehensive accessory kit for immediate deployment on site.

Technical Specifications

List of Contents

The E8000 stands apart from standard magnetic drills through its combination of Unibor's largest cutter capacity, proprietary DrillSmart and LiftShield technologies, and a 4-speed gearbox — features that collectively extend cutter life, protect the operator, and provide the speed flexibility needed when stepping between small and large diameter holes on the same job. Its swivel base, internal cabling, and quick-release interchangeable handle further distinguish it as a purpose-built solution for high-production structural steel work rather than a general-purpose drill.

Key Features & Benefits

DrillSmart Technology

DrillSmart is Unibor's proprietary intelligent control system designed to maximize both machine life and cutter life by optimizing motor performance during the cut. For contractors running expensive annular cutters on high-volume jobs, this translates directly into reduced tooling costs and less unplanned downtime.

LiftShield Safety System

LiftShield provides an additional layer of operator protection by monitoring and managing the machine's behavior during drilling operations. On large-diameter cuts where torque loads are highest, this system helps prevent dangerous kickback events that can occur if a cutter binds or the magnet loses adhesion.

4-Speed Gearbox

The four-speed gearbox allows the operator to match spindle speed to cutter diameter and material hardness, ensuring optimal cutting conditions across the full 4" capacity range. Running large cutters at reduced speed preserves cutter geometry and reduces heat buildup, while higher speeds keep smaller cutters productive.

2000W Variable Speed Motor with 4,496 lb Magnet

The 2000W motor delivers the sustained power needed to drive 4" annular cutters through heavy structural steel without stalling, while the high-strength electromagnet — rated at 4,496 lbs holding force on a 1" or thicker plate — keeps the machine locked firmly to the workpiece under full cutting load. Together, these specifications make the E8000 capable of tackling the largest holes that portable mag drilling demands.

Multi-Function Capability: Drilling, Countersinking, Twist Drilling, and Tapping

Beyond annular cutting, the E8000 accepts a 5/8" chuck for twist drilling up to 1-1/4", countersinking up to 1-5/8", and tapping up to 1-3/16". This versatility eliminates the need to bring multiple machines to a job site, reducing setup time and equipment costs.

Swivel Base, Internal Cabling, and Quick-Release Interchangeable Handle

The swivel base enables the machine to be repositioned for angled drilling without full repositioning of the workpiece. Internal cabling keeps the work area cleaner and reduces snag hazards, while the quick-release interchangeable handle allows the operator to adapt the grip configuration to confined or awkward access locations.

LED Work Light

The integrated LED work light illuminates the cutting zone directly, improving hole placement accuracy in low-light environments such as structural bays, confined spaces, or night-shift site work.

Common Applications

Structural Steel Fabrication

The E8000's 4" cutter capacity and 4" depth of cut make it the correct tool for drilling large-diameter holes through heavy structural sections — beams, columns, and plates — in fabrication shops and on site.

Construction and Ironwork

On construction sites where large bolt holes, pipe penetrations, or connection plates must be drilled in structural steel, the E8000's high magnet adhesion and powerful motor allow it to work safely in position without a drill press or fixed setup.

Railway Infrastructure

As explicitly identified in the manual's intended use, the E8000 is suited for drilling ferrous metal components in railway applications, where heavy rail sections and track hardware require large, precise holes.

Petrochemical and Industrial Plant

In petrochemical environments where drilling into pipe flanges, structural supports, and equipment frames is required, the E8000's swivel base and pipe adapter compatibility allow it to be used on curved and flat ferrous surfaces.

Pipe and Curved Surface Drilling (with Pipe Adapter Kit)

Using the optional pipe adapter kit with adjustable angle plates, the E8000 can be mounted securely on the longitudinal axis of a pipe to cut holes in round ferrous sections — a capability not available on standard flat-base mag drills.

Tapping and Thread Cutting in Ferrous Metal

With tapping capacity up to 1-3/16", the E8000 can cut threads directly in structural steel components, eliminating a secondary operation and reducing total cycle time on connection and fastener work.

Compatible Materials

• Structural steel (0.2/0.3C carbon steel — primary rated material)
• Ferrous metals (general — all flat and curved ferrous workpieces with minimum 1" thickness for full magnetic performance)
• Heavy plate steel
• Steel pipe and tube (with pipe adapter kit)
• Rail steel
• Steel fabrications and ironwork

Product Documents

• E8000 Operator Manual

Application Instructions

Pre-Operation Setup

1. Ensure the magnet switch is OFF before plugging the machine into the power supply.
2. Inspect all electrical supply cables and extension leads for damage; replace any damaged cables before use.
3. Verify the underside of the magnet base is clean, flat, and free of swarf or debris.
4. Confirm the workpiece is bare ferrous metal, flat, and at least 1" thick for full magnetic holding performance. If the workpiece is thinner than 1", position substitute material under the magnet and workpiece to achieve adequate thickness, or use an alternative secure restraint method.
5. Secure the machine to a fixed independent feature using safety strap (RDC4083) and stationary rings (RDC4082) affixed to the uppermost side hole of the magnet before every operation.
6. Ensure the coolant bottle contains sufficient cutting oil for the required operation duration.

Cutter Mounting

1. Disconnect the machine from the power source before changing cutters.
2. With the machine in the upright position, ensure the Arbor Assembly (CA130) is fully inserted into the Arbor Spindle (RDD4022).
3. Take the appropriate pilot pin and place it through the hole in the cutter shank.
4. Insert the shank of the cutter (3/4" Weldon shank) into the bore of the Arbor Assembly, aligning the two drive flats with the socket screws.
5. Tighten both screws securely using the hexagon key before operating.

Chuck Fitting (for Twist Drilling and Tapping)

1. Disconnect from the power source.
2. Insert Arbor Shank (RDD4128) into Arbor Spindle (RDD4022) and ensure a tight fit.
3. Insert 5/8" Chuck (RDD4126) into RDD4128 and ensure a tight fit.
4. To remove the chuck, reverse the sequence using the Drift (RDD4129).

Gear Selection

1. Select the appropriate gear using the slide selector before starting the motor. Use lower gears for larger diameter cutters to reduce output speed and protect the cutter.
2. Refer to the cutting speed selection chart in the manual for recommended speeds by cutter diameter and material.

Drilling Operation

1. Position the machine on the workpiece, switch on the magnet, and confirm secure adhesion before starting the motor.
2. Position the guard over the cutter before activating the machine.
3. Start the motor using the motor start button on the control panel.
4. Apply light pressure when commencing the cut until the cutter is introduced into the work surface, then increase pressure sufficiently to load the motor. Do not apply excessive pressure — it does not increase penetration speed and may trigger the overload protection or cause excessive heat.
5. Occasionally depress the pilot to confirm cutting fluid is being correctly metered to the cutter.
6. Keep the inside of the cutter clear of swarf, as swarf buildup restricts operating depth.
7. Always ensure the slug from the previous hole has been ejected before commencing the next cut.
8. To stop, depress the MOTOR stop button. Do NOT switch off the motor using the MAGNET switch.

Pipe Adapter Fitting

1. Attach adjustable angle plates (RD3328) with cap screws (RD4325) and washers (RD4205, 4 off each) to the magnet sides — do not tighten yet.
2. Locate the machine on the centerline of the pipe, ensuring the magnet is aligned with the longitudinal axis of the pipe.
3. Switch on the magnet and move the sliding plates down to the outside diameter of the pipe.
4. Tighten the screws on both sides by hand, then verify the full length of the moving plates is touching the pipe at the front and back. Fasten the plates securely.
5. Feed the safety strap through the lugs at the front of the housing, around the pipe, and pull tight.
6. When cutting, do not use excessive pressure — allow the cutter to ease into the cutting surface.

Safety Data Summary

Hazard Information

• Risk of electric shock if the machine is used in wet or damp conditions, or if the power cord or extension lead is damaged.
• Risk of fire or explosion if operated in the presence of flammable liquids, gases, or dust.
• Risk of serious personal injury if the magnet releases from the workpiece during operation — always use the safety strap and stationary rings.
• Risk of injury from ejected slugs on completion of each cut.
• Risk of injury from sharp swarf and cutters when changing tooling.
• Risk of entanglement with rotating parts from loose clothing, jewelry, or long hair.
• Cutting tools may shatter — always position the guard over the cutter before activating the machine.
• Do not use on the same structure when arc welding is in progress — DC current will earth back through the magnet and cause irreparable damage.
• Do not use on DC power supply — suitable for single-phase 50–60Hz AC only.
• This appliance must be earthed — do not remove the grounding prong or use adaptor plugs.

Personal Protective Equipment

• Approved eye protection must be worn at all times when operating the machine.
• Ear defenders must be worn when operating the machine.
• Safety gloves must be worn when changing cutters or removing swarf.
• All recommended PPE must be worn during operation.
• Remove ties, rings, watches, and loose adornments before operating.
• Secure long hair with an approved restraint before operating.

Safe Handling

• Ensure the magnet is OFF before plugging in the machine.
• Inspect all electrical cables before each use; replace damaged cables immediately.
• Always secure the machine with the safety strap (RDC4083) and stationary rings (RDC4082) before every operation.
• Disconnect from the power source before changing cutters or performing any maintenance.
• Use only approved cutting fluid — do not use water-diluted cutting oil.
• Apply light oil lubricant regularly to the slide and arbor support bearing.
• If the machine is accidentally dropped, thoroughly examine it for damage before resuming use.
• If the cutter becomes stuck, stop the motor immediately, disconnect from power, and turn the arbor manually to free it — do not attempt to free it by switching the motor on and off.
• When using the machine in an inverted position, use only the minimum amount of coolant and ensure coolant does not enter the motor unit.
• Repairs must be conducted only by approved Unibor agents.
• Do not exceed the recommended extension cable length: 11-1/2 ft of 3-core x 14AWG for 120V supply.

Frequently Asked Questions

Q: What is the maximum cutter diameter and depth the E8000 can handle?
A: The E8000 is rated for annular cutters up to 4" diameter and 4" depth of cut in 0.2/0.3C carbon steel, making it Unibor's largest capacity portable magnetic drill.

Q: Can the E8000 be used for operations other than annular hole cutting?
A: Yes. In addition to annular cutting, the E8000 supports twist drilling up to 1-1/4", countersinking up to 1-5/8", and tapping up to 1-3/16" using the supplied 5/8" chuck and appropriate tooling.

Q: What is the minimum workpiece thickness required for safe magnetic adhesion?
A: The magnet is rated at 4,496 lbs holding force on a workpiece of at least 1" thickness. Material thinner than 1" will progressively reduce magnetic performance. If the workpiece is too thin, substitute material should be positioned under the magnet and workpiece to achieve adequate thickness, or an alternative secure restraint method must be used.

Q: Can the E8000 be used on DC power or with arc welding in progress on the same structure?
A: No. The E8000 is designed for single-phase 50–60Hz AC supply only and must never be used on DC power. It must also not be used on the same structure when arc welding is in progress, as DC current will earth back through the magnet and cause irreparable damage.

Q: What extension cable can be used with the E8000?
A: The machine is factory fitted with a 9-3/4 ft, 14AWG, 3-conductor cable. If an extension is required on a 120V supply, do not exceed 11-1/2 ft of 3-core x 14AWG. Using an undersized or overly long extension cable will result in reduced magnet holding force and motor power.

Q: How often should the machine brushes be inspected?
A: Brushes should be checked at least once a week if the machine is used frequently. If a brush has worn more than two-thirds of its original length, it must be replaced immediately to prevent damage to the machine.

Q: Can the E8000 be used to drill holes in steel pipe?
A: Yes, with the optional pipe adapter kit. Adjustable angle plates attach to the magnet sides and allow the machine to be mounted securely on the longitudinal axis of a pipe for drilling curved ferrous surfaces.