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Industrial Air Solutions

Screw Air Compressor
Parts And Repairing Services

Supply, Installation, Lubrication, Repairing, Used Compressors & Genuine Spare Parts — Everything Under One Roof.

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ASTEC Screw Air Compressor — Professional Industrial Equipment

20 Yrs

Industry Experience

999+

Installations Done

ASTEC — Complete Screw Air Compressor Services

Screw Air Compressor Supply

We supply a wide range of new rotary screw air compressors from trusted global brands — perfectly matched to your pressure, flow, and duty-cycle requirements.

Installation & Commissioning

Our certified engineers handle complete on-site installation — from piping and electrical connections to alignment, start-up testing, and operator handover.

Preventive Maintenance

Scheduled maintenance plans that minimise downtime, extend compressor life, and ensure you always operate within OEM specifications and warranty terms.

Emergency Repairing

24 / 7 rapid-response breakdown support. Our on-call technicians are dispatched within hours to diagnose, repair, and restore your compressed air supply fast.

Lubrication & Oil Change

Correct lubrication is the lifeblood of a screw compressor. We supply and change genuine compressor oils at the right intervals to prevent overheating and wear.

Genuine Spare Parts

We stock and supply OEM-certified spare parts for all major screw compressor brands — ensuring optimal performance, reliability, and warranty compliance.

Used Screw Air Compressors

Quality-checked and fully refurbished used screw compressors — a cost-effective alternative with documented service histories and post-sale support included.

AMC — Annual Maintenance Contracts

One contract covers everything: scheduled services, priority emergency response, spare parts supply, and full technical support — all at a predictable annual cost.

ASTEC — Professional Screw Air Compressor Repairing

Air & Oil Leak Detection

We utilise advanced ultrasonic leak detectors and UV dye tracing to pinpoint microscopic air and oil leaks in piping, seals, and coolers, eliminating energy waste.

Main Drive Motor Repair

Comprehensive electrical and mechanical motor services including rewinding, insulation testing, terminal box repairs, and coupling alignments for smooth power transmission.

Bearing Replacement

Extraction and installation of high-precision SKF/FAG bearings for rotors and motors using proper thermal fitting techniques to prevent shaft damage and ensure perfect concentricity.

Air End Overhauls

The heart of your compressor. We perform complete strip-downs, rotor profile measurements, casing machining, and clearance adjustments to restore factory volumetric efficiency.

Controller & PLC Repair

Troubleshooting electronic control panels, replacing faulty relays, reprogramming PLCs, and fixing VSD (Variable Speed Drive) inverter faults to restore automated operations.

Pressure Fluctuation Fixes

Solving issues with compressors failing to load/unload properly by servicing inlet valves, replacing minimum pressure valves (MPV), and calibrating pressure transducers.

Noise & Vibration Analysis

Identifying abnormal operational sounds using vibration spectrum analysis to detect imbalance, misalignment, or gear wear before they cause catastrophic mechanical failure.

Emergency Breakdown

When your plant air goes down, our rapid-response field technicians arrive equipped with diagnostic tools and essential spares to restore pressure as quickly as possible.

ASTEC — Genuine Screw Air Compressor Spare Parts

Filtration

Air Filters

High-efficiency inlet air filters that capture dust and particles — protecting rotors and extending compressor life.

Genuine OEM

Lubrication

Oil Filters

Precision-rated oil filters that remove micro-contaminants from compressor oil — safeguarding bearings and rotor surfaces.

Genuine OEM

Separation

Separator Filters

Oil-air separator elements that strip residual oil from compressed air — delivering clean, dry output and reducing oil consumption.

Genuine OEM

Fluids

Lubrication Oil

OEM-approved synthetic and mineral compressor oils formulated for high-temperature stability, anti-wear protection, and extended change intervals.

Genuine OEM

Drive

Belts

Heavy-duty V-belts and ribbed drive belts engineered for compressor loads — resistant to heat, oil, and stretch for maximum service life.

Genuine OEM

Mechanical

Bearings

Precision-ground rotor and shaft bearings rated for continuous high-speed compressor duty — matched exactly to OEM specifications.

Genuine OEM

Electronics

Control Panels

OEM controller units and display boards that manage compressor start/stop, pressure regulation, fault diagnostics, and remote monitoring.

Genuine OEM

Instrumentation

Pressure Sensors

Calibrated transducers and pressure switches that enable accurate system monitoring, automatic unloading, and safety cut-out protection.

Genuine OEM

Flow Control

Valves

Inlet, check, minimum pressure, solenoid, and safety relief valves — all manufactured to OEM tolerances for reliable flow control and system protection.

Genuine OEM

Thermal

Cooling Components

After-coolers, oil coolers, thermostatic bypass valves, and cooling fans — keeping operating temperatures within safe OEM limits at all times.

Genuine OEM

ASTEC — Proper Lubrication for Maximum Compressor Life

Step 01 — Foundation

Why Lubrication Matters

In a rotary screw compressor, the oil does far more than lubricate. It seals the rotors, cools the compressed air, and carries heat away from bearings — all simultaneously. Without the right oil in the right quantity, your compressor can fail in as little as a few hundred operating hours.

3–5× lifespan with correct lube 40% of failures are lube-related

Oil forms a thin sealing film between male and female rotors, preventing metal-to-metal contact at high RPM.
Acts as primary coolant — absorbing heat generated during compression and transferring it to the oil cooler.
Lubricates all rolling element bearings, shaft seals, and the gear train where applicable.
Correct viscosity prevents internal leakage and maintains volumetric efficiency of the air end.

Step 02 — Selection

Recommended Oil Types

Always use OEM-specified compressor oil — never substitute with automotive engine oil or hydraulic fluid. The formulation is engineered for the unique demands of high-speed screw air ends.

ISO VG 46 / VG 68 Synthetic preferred

Synthetic PAO oil: Best for high-temperature applications, intervals up to 8,000 hrs.
Semi-synthetic: Good performance balance, typically 4,000–6,000 hr intervals.
Mineral oil: Standard duty, change every 2,000–3,000 hrs or per OEM schedule.
Viscosity grade: ISO VG 46 for ambient up to 35 °C; ISO VG 68 for hotter environments.

Step 03 — Schedule

Oil Change Schedule

A disciplined change schedule is non-negotiable. Degraded oil loses its anti-wear additive package, causing accelerated bearing and rotor wear. Track hours — not just calendar time.

Every 2,000–8,000 hrs Annual minimum

First change: At 500 hours to flush break-in contaminants and metallic particles.
Mineral oil: Every 2,000–3,000 operating hours or 12 months, whichever comes first.
Semi-synthetic: Every 4,000–6,000 operating hours or 18 months.
Full synthetic: Up to 8,000 hours — always confirm with OEM data sheet.
Replace oil filter simultaneously with every oil change — never reuse old filters.

Step 04 — Outcome

Benefits of Proper Lubrication

Investing in the right oil and correct intervals pays for itself many times over — through longer service life, lower energy bills, and fewer unplanned shutdowns.

Up to 15% energy savings 3× longer bearing life

Reduced internal friction lowers specific power consumption and energy costs.
Consistent cooling maintains discharge temperature within safe limits, preventing overheating trips.
Extended component life — bearings, shaft seals, rotors, and gear trains last significantly longer.
Cleaner air output: well-maintained oil separator produces drier, lower oil-carryover air.
Fewer breakdowns means more uptime and measurable improvement in production output.

Step 05 — Warning

Signs of Bad Lubrication

Catch lubrication problems early — before they escalate into catastrophic failures costing tens of thousands in repair bills and lost production time.

Act immediately Avoid costly seizure

High discharge temperature: Oil no longer cooling effectively — check level and condition immediately.
Excessive oil carryover: Milky or dark oil in your air lines signals separator failure or oil degradation.
Unusual noise or vibration: Grinding or knocking suggests dry or contaminated bearings.
Frequent high-temperature shutdowns: Thermostat trips are a symptom, not the root cause.
Dark, sludgy oil on dipstick: Oxidised oil must be drained immediately — do not delay.
Foaming oil sight glass: Moisture or wrong oil type causing emulsification.

Step 06 — Pro Tips

Expert Maintenance Tips

These are the habits followed by experienced compressor technicians that separate machines with 30,000+ hour air ends from those that fail at 10,000.

Log every service Use genuine parts only

Keep a written oil log: date, oil brand, quantity added, hours at time of change — every single time.
Check the oil level daily during the first 500 hours of a new machine or after major repairs.
Never mix oil brands or types — drain and flush completely before switching products.
Store oil in sealed containers away from heat and sunlight to prevent moisture contamination.
Send an oil sample for laboratory analysis every 2,000 hrs — catches metal wear before it becomes failure.
Replace the oil separator element every 4,000 hrs or annually — a blocked separator causes high oil carryover and back-pressure.

ASTEC — How Our Process Works

Inspection

Thorough visual and mechanical assessment upon arrival.

Diagnosis

Advanced tear-down and fault finding by engineers.

Quotation

Detailed reporting and transparent cost breakdown provided.

Approval

Client reviews report and authorizes work to proceed.

Repair

OEM parts installed and precision machining executed.

Testing

Load banking and vibration analysis to ensure factory spec.

Delivery

Safe transport back to your facility ready for immediate installation.

Watch Our Team Work In Action – ASTEC

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Industry Leaders

Why Industries Choose ASTEC

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Years Experience

Highly skilled engineering team specialized in screw compressor mechanics.

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Fast Response Time

Rapid deployment field technicians ensuring minimal downtime.

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Genuine Parts

Comprehensive ready-stock of OEM spare parts for immediate repairs.

Up to0%

Cost Savings

Highly competitive pricing on equipment and maintenance compared to industry averages.

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Projects Delivered

Proven expertise spanning across manufacturing and heavy industries.

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Client Satisfaction

Consistent delivery of quality service resulting in long-term retention.

0/7

Continuous Support

Round-the-clock technical assistance and emergency dispatch capabilities.

Frequently Asked Questions – ASTEC Compressors

Frequently Asked Questions

What is a Screw Air Compressor?

A screw air compressor is an industrial machine that uses two interlocking helical rotors to compress air. It is known for high efficiency, durability, and suitability for continuous industrial operations.

How often should compressor oil be changed?

We recommend changing the oil every 2,000 to 4,000 running hours or once a year. This prevents sludge buildup and protects internal components from friction and heat damage.

Do you provide emergency repair services?

Yes, ASTEC offers 24/7 emergency repair support. Our technicians are available to handle breakdowns to ensure your production line stays active.

Are your spare parts genuine?

We supply 100% genuine OEM-certified spare parts to ensure the longevity and performance of your screw air compressor.

Why is my compressor overheating?

Overheating is usually caused by a blocked oil cooler, low oil levels, or an old oil filter. It is essential to diagnose this early to avoid air-end seizure.

ASTEC – Reliable Screw Air Compressor Solutions

Industrial Compressor Experts

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Compressor Solutions?

ASTEC provides complete industrial compressor services including supply, installation, repairing, lubrication, spare parts and certified used compressors.

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