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Line Boring Services

Professional Heavy Equipment
Repair Services

Complete repair, restoration, and maintenance of construction and industrial machinery — on-site or in our workshop — across Nigeria.

20+ Years Experience
200+ Projects Completed
36 States Covered
24/7 Emergency Response
Request On-Site Service Emergency Call
Home › Line Boring Services › Heavy Equipment Repair

Our Capability

Heavy Machinery
Repair & Restoration

We specialise in the comprehensive repair and restoration of large-scale construction, mining, and industrial machinery. This is not light vehicle work — this is serious, high-stakes engineering where downtime costs thousands of naira per hour and precision is non-negotiable.

Our multi-discipline team combines structural welding, precision line boring, hydraulic engineering, and engine rebuilding capabilities into a single, unified service — eliminating the need to engage multiple contractors for complex equipment failures.

Every repair is executed to OEM tolerance specifications — verified with precision metrology tools before equipment is returned to service.

Excavators
All makes — boom, arm & bucket repair
Bulldozers
Frame, blade & undercarriage work
Wheel Loaders
Bucket linkage & powertrain repair
Tower Cranes
Slew ring, boom & structural repair
Backhoes
Pivot pin bore & arm alignment
Mining Equipment
Haul trucks, drills & processors
Generators
Industrial & standby power units
Hydraulic Systems
Cylinders, valves & pressure systems

Service Categories

Types of Heavy Equipment Services

We don't offer one fix — we offer complete mechanical solutions. Our five service categories cover every failure mode your heavy equipment can experience.

01
Structural Repairs
  • Frame crack diagnosis & welding
  • Boom & stick arm damage repair
  • Bucket reinforcement & rebuild
  • Mounting point restoration
  • Undercarriage structural work
Related: Welding & Fabrication
02
Hydraulic System Repair
  • Hydraulic cylinder repair & re-seal
  • High-pressure hose replacement
  • Seal kit replacement & reconditioning
  • System pressure testing & balancing
  • Pump & motor overhaul
Request Service
03
Engine & Powertrain Repair
  • Full diesel engine rebuilding & overhaul
  • Transmission repair & reconditioning
  • Cylinder head work & valve grinding
  • Cooling system repair & flushing
  • Turbocharger service & replacement
See Full Engine Rebuilding Service
04
Bore & Pin Repair
  • Worn pivot pin bore restoration
  • Bore misalignment correction
  • On-site portable line boring
  • Bushing installation & pressing
  • Pin replacement & machining
See Full Line Boring Service
05
Preventive Maintenance
  • Scheduled inspection programmes
  • Pre-failure component assessment
  • Lubrication & filter service
  • Fleet maintenance contracts
  • Detailed service reporting
Request Maintenance Plan
Replace with: AutoBore Pro on-site line boring

Mobile Engineering

Our On-Site Repair Capability

"We bring the machine shop
directly to your site."

For large, heavy equipment that cannot be easily transported, our mobile engineering teams deploy directly to your construction site, mine, oil facility, or port. We arrive fully equipped and ready to work — eliminating the costly logistics of moving broken machinery to a workshop.

Portable Line Boring

Self-aligning boring bars deployed on-site for bore repair without equipment removal.

Field Welding Rigs

Mobile MIG and TIG welding systems for structural repair and bore build-up in the field.

Emergency Response

Rapid mobilisation for breakdown emergencies. Our teams prioritise minimising your downtime.

Nationwide Deployment

Field teams deployable to any state in Nigeria — with logistics and HSE-compliant site operations.

Request On-Site Service

How We Work

Our Repair Process

Every heavy equipment repair follows a structured, engineering-grade process — ensuring consistent results, no surprises, and full client transparency at every stage.

01
Equipment Inspection & Diagnosis

Our engineers conduct a thorough on-site or workshop inspection to identify all failure points — structural, mechanical, and hydraulic.

Foundation
02
Damage Assessment & Quotation

A detailed written assessment is prepared — including scope of work, parts required, timeline, and a transparent fixed quotation before work begins.

No Surprises
03
On-Site or Workshop Repair

Repair is carried out by specialist technicians — on your site using mobile equipment, or in our equipped workshop for complex overhauls.

Core Phase
04
Precision Testing & Calibration

All repaired bores, welds, and mechanical systems are measured, load-tested, and calibrated against OEM specifications using precision metrology tools.

Quality Gate
05
Final Inspection & Client Approval

A final walkthrough is conducted with the client. Equipment is handed back with a full repair report, service certificate, and warranty documentation.

Sign-Off

Technical Capability

Equipment & Technical Arsenal

Our engineers work with precision-grade portable and workshop equipment — from self-aligning line boring machines capable of handling bores from 40mm to 600mm diameter, to full engine rebuild facilities and MIG/TIG welding systems.

Every tool is maintained, calibrated, and operated by trained technicians who understand the unique demands of heavy industrial environments. We don't compromise on equipment quality — because your machinery demands the best.

All on-site operations are conducted under strict HSE safety protocols, with risk assessments completed before any mobilisation. We protect your people, your site, and your equipment.

AutoBore Pro operates with full HSE compliance across all sites. Our technicians are trained in site safety, working at height, and heavy lifting operations. Safety is never an afterthought — it is built into every repair process.

Portable Line Boring Machines

Self-aligning bore bars — 40mm to 600mm diameter — operated on-site without equipment teardown.

MIG / TIG Welding Systems

Industrial mobile welding rigs for structural repair, bore build-up, hard-facing, and fabrication.

Hydraulic Test Equipment

Pressure testing rigs, flow meters, and diagnostic tools for complete hydraulic system assessment.

Engine Rebuild Facility

Crankshaft grinding, cylinder head resurfacing, honing machines, and precision engine assembly tools.

Precision Metrology Tools

Bore gauges, dial indicators, alignment lasers — every job verified to micron-level OEM specifications.

Heavy Lifting Equipment

50-tonne hydraulic press, engine hoists, and heavy component handling tools for safe workshop operations.

Industry Reach

Industries We Serve

Our heavy equipment repair expertise spans the full breadth of Nigeria's industrial sectors — from construction sites in Lagos to offshore vessels in Port Harcourt and mining operations in the North.

View All Industries
Construction

Excavators, cranes, compactors — on-site repair keeping projects on schedule.

Mining

Haul trucks, drills, and ore processors — built for extreme operating environments.

Marine

Vessel machinery, stern tube, and propulsion system repair at port or drydock.

Oil & Gas

Upstream and downstream equipment — compressors, pumps, and pipeline valves.

Manufacturing

Production-line machinery, fabrication plant, and heavy press equipment repair.

Transport

Heavy commercial vehicles, haulage fleets, and logistics equipment.

Proven Track Record

Project Highlights

Construction — Lagos
Excavator Boom Pin & Bore Repair — Komatsu PC300
Lekki Phase 2, Lagos State

Severely worn boom pin bores on a Komatsu PC300 caused excessive play in the boom arm, creating a safety risk and reducing digging efficiency by over 60%. Equipment could not continue operation.

On-site portable line boring — full bore restoration to OEM specification. New oversized pins machined and fitted. No equipment teardown or transport required.

18hrs Total Repair Time
0 Equipment Moves
100% OEM Tolerance
Marine — Port Harcourt
Offshore Vessel Stern Tube Bore Alignment
Port Harcourt, Rivers State

Critical stern tube bore misalignment on an offshore supply vessel caused severe propeller shaft vibration, leading to accelerated bearing wear and loss of vessel certification. Immediate intervention was required.

Precision re-boring of stern tube at berth. Full shaft alignment and seal replacement completed. Vibration eliminated — vessel passed classification survey and returned to service.

3days Turnaround
At Berth No Drydock
Passed Classification
Mining — Kaduna State
Hydraulic Excavator Full Structural & Bore Rebuild
Kaduna State, Northern Nigeria

Caterpillar 390F excavator sustained severe structural damage to the boom, extensive bore wear across 6 pivot points, and a failed hydraulic cylinder — all requiring simultaneous repair in a remote mining location.

Multi-discipline team deployed on-site: structural welding and reinforcement, 6-point line boring, hydraulic cylinder re-seal and pressure test. All work completed at the mine without equipment relocation.

6 Bores Restored
5days On-Site Duration
40% Cost vs Replacement

The AutoBore Difference

Why Choose Us for Heavy Equipment Repair

01

Experienced Heavy Equipment Technicians

Our engineers are not generalists — they are heavy plant specialists with 20+ years of hands-on experience repairing the exact machinery you operate. They understand the tolerances, the failure modes, and the operational pressures you face.

02

On-Site Nationwide Coverage

We deploy fully equipped field teams to all 36 Nigerian states. Construction sites, mines, ports, oil facilities — wherever your equipment breaks down, we have the logistics and the capability to reach you fast.

03

Integrated Line Boring & Welding

Most contractors handle only one discipline. We integrate structural welding, precision line boring, hydraulic repair, and engine rebuilding under a single team — eliminating coordination delays and ensuring every repair is coherent from start to finish.

04

Reduced Equipment Downtime

Every hour your equipment sits idle costs money. Our processes are engineered for speed without compromising quality — on-site repair eliminates transport delays, and our structured workflow ensures work begins immediately after approval.

05

Cost-Effective Restoration Solutions

Replacing heavy equipment costs millions. Our precision repair and restoration services can return equipment to full operational specification for a fraction of the replacement cost — with service records to match.

06

HSE-Compliant, Safe Operations

Every field deployment is preceded by a site risk assessment. Our technicians operate under strict HSE protocols — protecting your workforce, your site, and our team at all times. Safety compliance documentation provided on request.

Ready to Get Started

Need Immediate Heavy Equipment
Repair?

Whether it's an emergency breakdown or a planned overhaul — our engineers are ready to mobilise. Get a fast, accurate quote within 24 hours or call us directly for urgent situations.

Request On-Site Service Call Now — +234 801 234 5678

Emergency Breakdown? Call or WhatsApp us directly. Our team prioritises emergency mobilisations — we understand that heavy equipment downtime costs you every minute it sits idle.

Also From AutoBore Pro

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Welding & Fabrication

Structural welding, bore build-up, hard-facing, and heavy fabrication for equipment repair and custom components.

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Engine Rebuilding

Full diesel and petrol engine overhaul — crankshaft grinding, cylinder head work, and complete power unit rebuilds.

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Preventive Maintenance

Scheduled fleet maintenance programmes designed to prevent failures before they happen and reduce total cost of ownership.

Request Programme