Title: Time Tracking & Payroll System Type: Mobile application with backend system Status: In active use within the company
The Challenge Recording work hours and calculating overtime was previously handled in Excel. Closing each payroll cycle took considerable time, records were difficult to audit, and manual calculation left room for error — particularly around holidays, where overtime rates vary.
What We Built
Mobile clock-in and clock-out that staff can use on their own devices
Automatic overtime calculation, with rates applied according to holiday type
Versioned payroll rules, so updating a rate never alters figures from cycles already closed
Per-employee and per-cycle summaries with a full audit trail
Title: Bilingual Corporate Website Type: Corporate website Link: The site you're viewing now
The Challenge The company needed a presence that would surface in Google searches and serve both Thai and international clients — one the team could update themselves without going back to a developer for every change.
What We Built
Full Thai and English localisation across the entire site
A content management system for adding and editing services and project entries without touching code
SEO and page-speed considerations built into the architecture from the start
Design, Fabrication and Installation of an Industrial Jib Crane
JS Custom Machine & Autosystem Co., Ltd. provides crane and lifting-assist solutions built around the actual workpiece and working area — covering site survey, design, drawings, structural fabrication, installation, and function testing before handover.
Our process
• Survey and define requirements — workpiece size and weight, pick-up and set-down points, lifting height, reach, and obstructions in the area
• Design and drawings — structural concept and mounting position, with 2D or 3D drawings for review before fabrication
• Fabrication and assembly — steel structure fabrication and assembly of the jib arm, hoist, and accessories to the approved drawings
• Installation and testing — on-site installation, checking movement, controls, and fit with the surrounding area before handover
3D concept of the support structure and workpiece-holding fixture
Sample jib crane assembly drawing with dimensions and bill of materials
On-site installation
A pillar-mounted jib crane installed in a warehouse, planned around forklift traffic, storage racks, and operator work points.
Need a crane or lifting-assist system for your factory? Send the workpiece weight and size, required lifting height and reach, and photos of the installation area to the JS team for an initial assessment.
Gear Motor, Speed Variator Maintenance and Annual PM
The company provides inspection, maintenance, repair and installation of drive units. We set the scope of work from the machine model, its operating history, its actual condition and the manufacturer's manual, to reduce the chance of breakdowns and plan costs properly.
Our work covers the full machine drive train, from electric motors and mechanical speed variators to reduction gearboxes. We take into account the equipment condition, how it is used and the manufacturer's specifications to define the right repair scope and help plan around production.
Motor with mechanical speed variator and reduction gearbox
Signs That Equipment Needs Inspection
• Abnormal noise or vibration
• Running hotter than normal
• Oil leaks or seepage
• Unstable speed or a sticking speed adjustment
• Reduced power transmission
• Shaft play or jerky machine operation
Annual PM
• Inspection of external condition, cleanliness, rust, leak points, seals, breathers and rotating-part guards
• Inspection of the machine base, mounting points, couplings, coupling elements, shaft alignment and looseness, following the manufacturer's methods and specifications
• Check of gear oil level, type and condition, including the lubrication and cooling systems actually installed
• Recording of noise, vibration, temperature and electrical current when an agreed measurement scope exists, stating the load, speed and measurement conditions
• Inspection of the motor, cooling fan, covers, terminal box, terminals and earthing by personnel qualified for the task
• Function test after service, recording of results, and recommendations for monitoring or further repairs
Repair and Overhaul Based on Inspection Results
When there are signs of a problem or it is within the approved scope, we disassemble, clean and inspect the internals: gears, shafts, bearings, seals and the gear housing. We measure clearances and tolerances against the manual, replace the parts that need it, reassemble, fill with the correct lubricant and test according to the agreed plan.
Annual PM does not require dismantling the whole gearbox or replacing bearings and oil every year. Disassembly, part replacement and lubricant change intervals are decided mainly by the manual, operating hours, inspection results and the operating environment.
Additional Work to Be Specified in the Quotation
Lifting and transport, alignment with specialized tools, oil analysis, analytical vibration measurement, insulation testing, rewinding, shaft machining and testing under load. The scope, tools and costs for each are stated separately
as needed.
Service Process
1. Information Gathering and Site Survey
We collect nameplate photos, power rating, gear ratio, load type, running hours, repair history, symptoms and production shutdown constraints. We identify machine codes and match the inspection list to the actual equipment.
2. Planning and Scope Confirmation
We define the work method, responsible persons, shutdown duration, lifting equipment, tools, spare parts and test list, and confirm what is included and excluded before work begins.
3. Safety Preparation
We coordinate the work permit and JSA according to factory requirements, isolate and lock out energy sources and verify the zero-energy state, control stored energy and barricade the area. Lifting follows a lift plan with suitable equipment and qualified personnel.
4. Pre-Service Inspection and Recording
We record photos and measurements under suitable conditions and check for leaks, mounting points, ventilation, lubrication and abnormal symptoms. Measuremeods that do not touch rotating parts andfollow site requirements.
5. PM or Approved Repair Work
We clean, adjust and lubricate according to the manual. If damage outside the scope is found, we present the inspection results and an additional repair list for approval before replacing parts.
6. Reassembly and Readiness Check
We check alignment, mounting points, tightening torque, oil level and system connections, and refit the covers. Readiness is checked together with the customer before energy is restored.
7. Testing and Handover
We test rotation direction and operation by methods the manufacturer permits, and check leaks, noise, vibration, temperature and current within scope. Resultd criteria and a report is handed over.
Internal shaft and bearing assemblyInternal parts of the speed variator
Motor terminal box wiringMotor nameplate
Inspection Plan and Maintenance Intervals
This table is a proposed framework for planning with the factory. It must be adjusted to the manual of the actual model, the machine's criticality and its operating hours. Annual PM does not replace the in-year inspections the manufacturer requires.
Interval
Planned Activities
Proposed Responsibility
During operation
Observe noise, heat, vibration and leaks from a safe position; record any abnormality
Operator
Per manufacturer's interval
Check oil level, breathers, lubrication system, base and mounting points as applicable
Maintenance department
Annual shutdown
Detailed inspection and trend measurement, cleaning, drive and electrical system checks within scope
Service team together with the factory
When hours are reached or signs appear
Lubricant change, oil analysis, part replacement or overhaul based on assessment
Work approver
Key Inspection Items for Recording
Item
Data and Criteria to Record
Machine
Asset ID, model, serial no., power, gear ratio and operating hours
Oil and leaks
Type, grade, level, condition, leak points and replacement schedule per the manual
Noise and vibration
Measurement points, load condition, speed, measured values and trend against baseline
Temperature and current
Measurement points, ambient temperature, load, and manufacturer's or agreed criteria
Base and power transmission
Mounting points, couplings, alignment, covers and condition results
Post-service result
Pass, monitor, or recommend taking out of service, with inspector and follow-up date
The same pass values are not applied to every gear motor model. Values such as temperature, vibration, current or backlash must refer to the manual or to criteria suited to the machine, agreed before testing.
Motor, speed variator and reduction gearbox assembly from another angle
Deliverables and Information for Job Assessment
What the customer receives within the agreed scope
• Machine register and a checklist with inspection results for each point
• Photos before, during and after service, labeled with the machine code or inspection point
• Measurement and test results, with test conditions and evaluation criteria
• List of parts and lubricants actually used, including defects not yet corrected
• Recommendations on priority, spare parts and follow-up intervals
• Handover documents with sign-off fields for the customer's representative and the service provider
Information for Preparing a Quotation
Number of machines and their codes, nameplate photos, photos of the actual installation, symptoms, repair and oil change history, production shutdown windows, site access conditions, lifting or transport scope, and the report format the customer requires.
Price, lead time, payment terms and warranty are stated in each job's quotation after assessment. No warranty period or savings are promised that have not been agreed.
We inspect, maintain and upgrade hydraulic systems on industrial machinery, covering hydraulic cylinders, power units, pumps, valves, piping and control components. We also prepare Preventive Maintenance (PM) plans to catch faults before they cause damage and to schedule downtime at the right time.
Service Options
On-site assessment, component-only repair, removal and reinstallation, condition-based overhaul, and one-off or annual-contract PM. The inspection list, spare parts, downtime window and test conditions are agreed with the customer before work begins.
Hydraulic Cylinder Repair Scope
We trace the cause of oil leaks, loss of force, cylinder drift, jerky movement or abnormal stroke by checking the cylinder body, mounting points, load alignment and control circuit, so that internal seal leakage can be told apart from valve or oil supply problems.
Inspection and Repair Work
• Disassemble and clean, record part positions, and check for metal debris, contamination and the condition of the old seals
• Measure the piston rod, cylinder bore, piston, seal grooves and bushings; check straightness, scoring, rust, plating and wear against specifications
• Replace Rod Seal, Piston Seal, Wiper, O-ring, Backup Ring and Wear Ring according to the model and inspection results, selecting materials compatible with the oil, temperature and pressure
• Assess rod surface repair, re-plating, grinding, cylinder honing or manufacture of replacement parts to the agreed drawings and tolerances; this work is quoted separately based on condition
• Check threads, end caps, Tie Rods, mounting points, Pins and Bushes; reassemble to the specified torque and protect the ports from contamination
• Test movement, external leakage and internal leakage using the test method and values confirmed before handover
Cylinder and piston rod parts disassembled for condition inspection
Replacing seals alone may not fix the root cause if the rod or bore is damaged, the installation is misaligned, or the system is contaminated, so the repair method is chosen after a joint assessment.
Hydraulic Machinery Repair Scope
Power Unit and Oil System
We inspect the Hydraulic Power Unit (HPU), including the pump, motor, coupling, oil tank, filters, Breather and Oil Cooler, checking noise, vibration, heat and air ingress, and measure pressure, flow or Case Drain where the equipment and test method for that model allow.
Valves and Control Circuits
We inspect Directional Valves, Relief Valves, Check Valves, Flow Controls and load-holding valves according to the circuit, and check coils, connectors, control signals and response. Electrical causes are separated from hydraulic faults before any repair or replacement, and pressure is never raised to compensate for worn components without an assessment.
Pipes, Hoses and Fittings
We inspect hydraulic hoses, fittings, flanges, rigid pipes, clamps, chafing points and hose routing, and replace parts with the correct pressure rating, material, thread and compatibility. Pressure Gauges, Pressure Switches, Sensors and Accumulators are also checked when they are within scope.
Machine Systems and Upgrades
We check cylinder mountings, travel alignment, guides and the operating sequence of presses, clamping units, lifting units and other hydraulic machines, and assess upgrades to cooling, filtration, measuring points and alarms based on the problems found, confirming suitability for each machine model.
Machine overview and hydraulic hose routing used for inspection planning
Work Process and Testing
Step
Details and records required
1 Information gathering and survey
Identify the machine, symptoms, repair history, system ratings and site constraints
2 Analysis and scope proposal
Determine preliminary causes and define the teardown list, spare parts, repair method and downtime
3 Preparation and energy isolation
Prepare safety documents, support the load, isolate energy sources and release residual pressure
4 Teardown and confirmation of items
Tag ports and parts, measure actual condition, and report any additional damage for customer approval before repair
5 Repair and reassembly
Control cleanliness, check parts and ratings, reassemble per the manual and record replaced parts
6 Testing and handover
Test according to the plan, record before-and-after values, report limitations and outstanding work, and sign off the handover
Post-Repair Testing Principles
Leakage and movement are checked without load first, then tested with a load the customer confirms is safe under the test plan. Pressure, temperature, stroke, extend and retract times, and position holding are recorded where relevant to the machine's function.
Test pressure, hold time, number of cycles and acceptable leakage must follow the manual or agreed specifications. The same pressure multiplier is not applied to every type of cylinder, and testing never exceeds the rating of the lowest-rated component in the test setup.
Acceptance Criteria
• No external leakage under the specified test conditions, and internal leakage within the limits for that model
• Movement, stroke, speed and position holding meet the agreed criteria, with no abnormal noise or jerking
• In-scope control systems and protective devices pass testing, with any items that could not be checked recorded
Annual Hydraulic System PM Plan
The plan below is a framework for service contracts, not a mandatory schedule for every machine. Intervals should follow the manual, operating hours, environment and machine criticality; where the manual specifies both time and operating hours, whichever comes first applies.
Recommended frequency
Main inspection items
Performed by
Daily or before each shift
Oil level, leaks, noise, temperature, pressure and warning lights; record the readings
Operator or customer maintenance team
Monthly
Rod and seal condition, hoses and fittings, mounting points, Cooler and filter clogging indicators
Maintenance team or service team
Quarterly
Pressure and temperature trends, cycle times, recurring leaks, sensor signals and spare parts planning
Contracted service team
Every 6 months
Review oil condition, consider sampling for analysis, check couplings and cooling performance
Service team, and a laboratory where specified
Annually
Shut down for an in-depth inspection per the checklist below, review the year's results and plan major repairs
Service team together with the customer
Condition- or hour-based
Replace filters, oil, seals and hoses according to the manual, inspection results, service life or abnormal signs
Person responsible as assigned in the plan
Example Annual Service Schedule
A survey and baseline are established before the service cycle begins, followed by 4 visits: months 3, 6 and 9 to monitor condition, and month 12 for a major inspection during the annual shutdown. The actual number of visits and the initial survey are specified in the quotation, while operators continue daily checks throughout the year.
When to Increase Frequency
Machines running multiple shifts, in dusty or hot environments, exposed to water or metal debris, operating near their rated limits, or with a high impact on safety and production should have inspection intervals increased according to risk. Do not wait for the annual service when abnormal symptoms appear.
Annual PM Inspection Checklist
The actual list is adjusted to the model and installed equipment. Each result is recorded as Pass, Monitor, Correct or Not Applicable, together with measured values, photos and the inspector's name. Items not yet tested are never marked as passed.
System inspected
Inspection work and evidence
Hydraulic cylinders
Rod and seal condition, leaks, mounting points, load alignment and play; test stroke and position holding as appropriate
Pumps and motors
Noise, vibration, motor current, coupling condition, mounting base, and performance values that can be checked by the manufacturer's method
Tank and oil
Level, colour, foaming, water, sediment and cleanliness; take samples for viscosity, water and particle testing when in scope
Filters and Breather
Check clogging indicators, model and replacement history; replace per the manufacturer's criteria or inspection results. Disposable filters must never be cleaned and reused
Cooling system
Check fins, fans, coolant flow where fitted, and temperature trends during operation
Valves and Manifold
Check leaks, response, coils, wiring and Setpoint values against the approved circuit
Hoses, pipes and fittings
Check for cracks, swelling, abrasion, rust, leaks, hose age, bend radius, clamps and routing at risk of chafing
Accumulator (if fitted)
Check mounting, leaks and ratings; assess pre-charge pressure per the manual, by qualified personnel with dedicated equipment
Instruments and sensors
Compare readings against reference instruments; external calibration is specified separately from general inspection
Control and protection systems
Test Interlocks, alarms and Emergency Stop according to the machine's plan, in coordination with the person responsible for safety systems
Running the machine after PM
Test without load and with the agreed load, re-check for leaks, and record pressure, temperature and operating times
Condition summary and next year's plan
Prioritise urgency, estimate spare parts and Downtime, and set follow-up dates for defects
Tank cleaning, oil changes, Offline oil filtration and Flushing are selected based on inspection results and oil compatibility. Overhauling pumps or cylinders every year is not always necessary and must be confirmed as a separate work item.
Safety, Quality and Handover Documents
Safety Controls Before Repair
We assess risks and prepare a JSA or Work Permit according to plant requirements, carry out Lockout Tagout (LOTO) on the relevant energy sources, and release and verify residual pressure in every section, including circuits with Check Valves and Accumulators. Mechanical supports are used for loads or parts that could fall or move.
The pressure test area is barricaded, and equipment ratings and tool readiness are checked. Hands are never used to search for high-pressure leaks, and fittings are never loosened while under pressure. Accumulator work uses the gas and charging kit specified by the manufacturer and is done by qualified personnel; oxygen or compressed air must never be used in place of nitrogen.
Cleanliness and Spare Parts Control
Ports are capped immediately after removal, assembly is done in a clean area, and parts are stored as sets. Part numbers and compatibility are checked, oils are never mixed without verification, and spills, oil and contaminated materials are handled according to the plant's procedures.
Documents That Can Be Included in the Service Scope
• Pre-repair and post-repair condition reports with photos and a list of damage
• List of replaced parts, with part number, size, quantity and material where known
• Test records stating ratings, conditions, measured values, instruments and results against the acceptance criteria
• PM Checklist, machine history, and a list of defects with follow-up dates
• Handover document and operating recommendations, including items outside the scope or not yet inspected
Service Terms and Warranty
Service fees, spare parts, transport, repair lead time, number of PM visits and warranty period are specified in the quotation based on the survey. Any additional damage found after teardown must be approved before work proceeds. The warranty covers work and parts under the agreed terms, with the cause assessed where contaminated oil, operation beyond rated limits or other parts of the machine are involved.
Seal parts, end caps and cylinder components in a trayTwo hydraulic piston rods removed from the cylinder assembly
Hydraulic cylinders and piston rods laid out on the workbenchHydraulic cylinders mounted in pairs on a blue machine frame
Industrial machine with cylinder assemblies and hydraulic hosesSide view of the machine showing its structure and hydraulic hose routing
Overview of the machine in the factory and surrounding equipmentMotor and equipment mounted on the side of the machine
