Portable Line Boring & Bore Welding
Mondak Equipment provides portable line boring, automated bore welding, pin and bushing repair for heavy equipment in the field and in the shop.
A New Pin Won't Fix a Worn Bore
Once a pivot bore has worn oversized, egg-shaped or out of alignment, another pin or bushing may only tighten things up temporarily.
The bore itself needs attention.
With our CLIMAX equipment, we can build worn material back up, establish alignment and machine the bore back to the dimensions needed for the repair.
The goal is more than making the hole round again. The goal is to put the pivot back where it belongs.
CLIMAX BB5000 Portable Line Boring
Mondak uses CLIMAX BB5000 portable line boring systems for heavy-equipment bore repair.
The BB5000 uses a 2.25-inch boring bar and is designed for bore diameters from approximately 1.5 inches up to 24 inches, depending on setup.
That gives us a wide working range for repairs involving:
- Excavator booms and sticks
- Bucket and linkage bores
- Wheel loader linkage
- Center articulation joints
- Dozer and blade pivots
- Backhoes
- Telehandlers
- Cranes
- Cylinder mounts
- Oilfield equipment
- Rail equipment
- Agricultural equipment
- Industrial machinery
- Multiple aligned bores
- Large pin and pivot joints
Because the equipment is portable, the machining operation can often go to the machine instead of requiring the entire structure to come to a machine shop.
CLIMAX BW1000 Automated Bore Welding
When a bore has lost too much material to simply machine it larger, Mondak also has a CLIMAX BW1000 Auto Bore Welder.
The BW1000 automatically deposits weld material around the inside of the worn bore so the damaged area can be built back up before finish machining.
Its standard torch setup can work across a broad range of bore sizes, approximately 0.88 inches through 24 inches depending on configuration.
The system can be used in:
- Horizontal bores
- Vertical bores
- Inverted positions
- Confined equipment locations
- Field repairs
- Shop repairs
That gives us a practical way to restore material where years of movement have worn the original bore away.
Bore Weld It. Machine It Back to Size.
The BB5000 and BW1000 are designed to work together.
That allows us to approach a badly worn joint as a complete repair:
- Measure
- Establish Alignment
- Bore Weld
- Machine
- Fit Pin/Bushing
- Verify
Instead of simply installing an oversized pin into a damaged hole, we can restore the bore material and then machine it back to the dimensions required for the joint.
That is especially important when multiple bores need to remain on the same centerline.
Multiple Bores Need to Line Up
A round bore is not enough if it is no longer aligned with the bore on the other side of the joint.
Line boring establishes a common centerline through the repair.
That matters on components such as:
- Boom pivots
- Loader arms
- Bucket linkage
- Center articulation
- Cylinder mounts
- Crane pivots
- Large equipment frames
If two bores are supposed to share one pin, they need to agree on where that pin belongs.
Pins, Bushings & Related Machining
Sometimes the bore is only part of the problem.
Mondak can also address related components including:
- Pins
- Bushings
- Sleeves
- Spacers
- Retainers
- Washers
- Shafts
- Related machined parts
That becomes especially useful when the original component is:
- Obsolete
- Backordered
- Extremely expensive
- No longer manufactured
- An unusual size
- Part of modified equipment
We are not limited to repairing the hole and then waiting for an unavailable factory pin.
Excavator & Loader Bore Repair
Excavators and loaders are common line-boring applications because so many heavily loaded joints depend on pins and bushings.
Typical areas include:
Excavators
- Bucket-to-linkage pivots
- Bucket linkage
- Stick-to-boom connection
- Boom-to-frame
- Cylinder mounts
Wheel Loaders
- Bucket linkage
- Lift-arm pivots
- Bellcranks
- Cylinder mounts
- Center articulation
A little movement eventually becomes more movement.
Once the bushing wears through and the bore starts taking the load, the repair gets bigger.
Center Articulation Repair
Articulated loaders, graders and similar equipment depend on large center joints staying properly supported and aligned.
Wear may show up as:
- Excessive articulation movement
- Loose pins
- Worn bushings
- Oval bores
- Steering movement
- Misalignment
- Repeated pin or bushing failures
Once the structure itself is worn, another pin-and-bushing set may not be enough.
Portable line boring gives us a way to repair the machine where it sits.
Cylinder Mounts
Cylinder mounting points take substantial load.
A worn cylinder-mount bore can cause:
- Excessive movement
- Side loading
- Damaged pins
- Rapid bushing wear
- Cylinder misalignment
- Rod or gland problems
- Repeated cylinder failures
Sometimes what looks like a cylinder problem starts at the joint supporting the cylinder.
That is why we look at the whole mounting point instead of stopping at the hydraulic component.
Cranes, Rail Equipment & Oilfield Equipment
Portable line boring is not limited to construction equipment.
Mondak can evaluate worn bores and pivots on:
- Cranes
- Telehandlers
- Railmovers
- Locomotive equipment
- Oilfield equipment
- Agricultural machinery
- Material-handling equipment
- Industrial machinery
- Specialized heavy equipment
If the component is large, difficult to move and depends on a pin fitting correctly in a bore, line boring may be part of the repair.
Bring the Machine Shop to the Machine
Large equipment does not always need to be dismantled and hauled somewhere just to machine a bore.
Our portable CLIMAX equipment allows us to set up at the machine when the repair and site conditions allow.
That can reduce unnecessary disassembly and keeps the machining centered around the actual equipment geometry.
Older Equipment & Obsolete Parts
Older equipment often adds another layer to the job.
The bore may be worn, and the original:
- Pin is discontinued
- Bushing is unavailable
- Shaft has been modified
- Joint has already been repaired once
- Factory dimensions no longer match what is on the machine
Mondak can combine:
- Portable line boring
- Bore welding
- Machining
- Pin and bushing manufacture
- Welding
- Fabrication
to build a practical repair around what is actually there.
A worn bore and an obsolete part number do not have to end the conversation.
Show Us the Worn Joint
You do not need to know whether the bore needs welding, how much material needs to come out or what final size it should be before calling.
Useful information includes:
- Equipment manufacturer and model
- Location of the worn joint
- Approximate pin size
- Photos
- Equipment location
- Access around the repair
- Whether the joint can be disassembled for setup
Tell us what is loose, worn or damaged. We'll determine what it takes to restore the joint.