Maximizing Equipment Life – Preventive Maintenance Best Practices for Modern Manufacturing

Preventive maintenance (PM) enhances equipment reliability, reduces the total cost of ownership (TCO), and extends the service life of high-value manufacturing assets. PRAB® equipment—often still running after 30+ years—proves how disciplined maintenance translates into unmatched durability and ROI.

---

Why Preventive Maintenance Matters

Unplanned downtime is the largest hidden expense in metalworking and industrial operations. When a conveyor chain breaks or a filter clogs unexpectedly, the loss compounds—idle labor, missed orders, scrap contamination, and sometimes environmental violations.

Preventive maintenance is not just about avoiding breakdowns; it’s about maintaining efficiency, safety, and profitability. According to industry benchmarks, planned maintenance costs are typically 2–4× lower than emergency repairs. *

PRAB’s blog, Improving Your Preventive Maintenance Programs, highlights how proactive inspection schedules and proper lubrication extend component life, prevent contamination, and reduce risk.

---

PRAB’s Durability Record: Built to Last

For more than 70 years, PRAB has engineered rugged, USA-built systems designed for continuous operation in demanding environments. From metal scrap conveyors to metal chip processing technology, coolant recycling and reuse equipment, and industrial wastewater treatment units, PRAB systems are renowned for their longevity—many running decades beyond their expected lifecycle.

• Case in point: Old Faithful Retires—Zircoa Reinvests in PRAB tells of a roller bucket conveyor that ran 48 years before replacement—proof that disciplined maintenance paired with robust design delivers exceptional TCO.

---

The ROI of Preventive Maintenance

Manufacturers adopting structured PM programs report measurable gains:

Benefit	Typical Impact
Reduced Downtime	Up to 30% less unplanned stoppage
Extended Service Life	25–50% longer component lifespan
Lower Total Cost of Ownership	Planned repairs cost 2–4× less
Improved Safety & Compliance	Fewer leaks, spills, and violations
Higher Throughput & Energy Efficiency	Cleaner systems move materials more efficiently

 

Well-maintained PRAB systems also consume less power, experience fewer hydraulic or pneumatic failures, and deliver consistent performance under load.

---

PRAB Preventive Maintenance Checklists

Below are highlights from PRAB’s structured PM guidelines. Complete schedules and inspection templates are available in PRAB’s operation guides, which accompany all their equipment.

 

1. Metal Scrap Conveyors

(Steel Belt, Drag, Oscillating, Pivot Belt)

Daily / Per Shift

• Clear chips and debris from belt paths
• Verify tracking, alignment, and listen for abnormal vibration
• Inspect guards and covers for safety compliance

Weekly

• Lubricate bearings, chains, and drive components
• Check belt tension, sprockets, wear bars, and side rails
• Verify auto-lube and auto-take-up systems

Monthly

• Inspect pulleys and rollers for wear
• Check the reducer oil level and grease points
• Inspect the frame for cracks or weld fatigue

Annually

• Conduct vibration and thermographic analysis
• Drain and replace gear reducer oil
• Re-align frame and drivetrain

Tip: PRAB recommends Shell Nerita 2 or an equivalent grease and SAE 20-30 oil for conveyor roller chains. Predictive diagnostics, such as thermography, can identify misalignment or bearing issues before they lead to failure.

---

2. Chip Crushers & Processing Systems

Daily

• Check the feed chute and crusher chamber for obstructions
• Monitor for unusual noise or vibration

Every 200 Hours

• Lubricate bearings and drive components
• Inspect belt drives, reducers, and liners

Quarterly / Annual

• Inspect hydraulic systems for leaks
• Conduct full teardown and rebalancing yearly

See PRAB Metal Chip Processing Systems for integrated crushers, wringers, and briquetters engineered for serviceability and long life.

---

3. Coolant & Fluid Filtration Systems

Daily

• Monitor pressure and flow gauges
• Check for leaks and pump noise
• Verify automatic backflush or media advance operation

Weekly

• Clean strainers, nozzles, and float switches
• Inspect filter media and confirm advance mechanisms

Monthly

• Lubricate agitators and bearings
• Test alarms, electrical controls, and sensor calibration

Annual

• Inspect tanks for corrosion or scaling
• Replace sprockets, seals, or filter media drive chains
• Conduct sediment flush and chemical cleaning if necessary
• Replace inlet bag filter

Related resource: PRAB Guardian® Coolant Recycling System—an automatic fluid management solution proven to cut new fluid purchases by up to 75%.

---

4. Industrial Process Water and Wastewater Treatment Systems

Daily

• Monitor pH, ORP, and turbidity sensors
• Inspect pumps, mixers, and aerators
• Verify chemical dosing accuracy

Weekly

• Inspect sludge presses or centrifuges
• Calibrate ozone and UV disinfection units

Monthly / Quarterly

• Flush dosing lines and replace filter cartridges
• Inspect evaporators and heat exchangers

Annual

• Descale exchangers
• Audit compliance documentation

See PRAB’s Industrial Wastewater Treatment Solutions to learn how PM supports regulatory compliance and Zero Liquid Discharge (ZLD) initiatives.

---

Predictive Maintenance: The Next Step

While traditional PM follows a fixed schedule, predictive maintenance (PdM) uses real-time data—vibration, temperature, amperage, and oil analysis—to predict when service will be needed.

PRAB equipment integrates easily with PdM sensors and Industry 4.0 platforms, giving maintenance teams visibility into:

• Bearing temperature trends
• Motor current fluctuations
• Filter pressure differentials
• Hydraulic system performance

Combining PM with PdM ensures maintenance is done only when necessary, maximizing uptime and reducing labor costs.

Discuss with PRAB experts the addition of IIoT and extra sensors to your equipment to further automate and streamline your operations.

---

Total Cost of Ownership (TCO) Optimization

Preventive maintenance directly improves a system’s TCO by:

• Reducing unscheduled downtime and emergency part shipments
• Extending the useful life of high-cost assemblies (reducers, drives, tanks)
• Reducing energy use through clean, friction-free operation

PRAB’s Managed Maintenance Program provides OEM inspections, wear benchmarking, and proactive scheduling—ideal for plants with lean maintenance teams.

---

Best Practices for a Modern PM Program

To achieve long-term success, manufacturing leaders should combine PRAB’s maintenance checklists with operational best practices:

1. Digitalize Your PM Schedule:
   Use a computerized maintenance management system (CMMS) to automate tasks, record service history, and generate alerts.
2. Standardize Procedures:
   Create job-specific PM instructions, including photos and torque specifications, to reduce variability among technicians.
3. Train Staff on Root-Cause Analysis:
   Move beyond “replace-and-forget.” Teach teams to investigate lubrication, alignment, or loading errors that lead to wear.
4. Benchmark Performance:
   Track MTBF (Mean Time Between Failures) and MTTR (Mean Time to Repair) for each asset.
5. Audit Annually:
   Compare actual maintenance performance to the plan and adjust frequencies as needed.

---

The PRAB Difference: Built on Longevity and Support

PRAB’s commitment extends beyond equipment design. With over 200 published technical resources, PRAB.com offers case studies, white papers, and checklists to help manufacturers improve operational reliability.

PRAB’s equipment longevity—often surpassing 30 years—shows how engineering quality, combined with disciplined maintenance, yields lasting value. Whether recycling metal chips, treating wastewater, or reclaiming coolant, every PRAB system is designed for serviceability, uptime, and low ownership cost.

---

Final Thoughts: Reliability Is an Investment

Preventive maintenance is the foundation of sustainable manufacturing. It protects both people and profits while reinforcing the environmental and operational goals of modern facilities.

For plant managers and engineers seeking long-term reliability, the best preventive maintenance plan starts with the right equipment—and the right partner.

Explore PRAB’s full library of maintenance resources, guides, and videos at www.prab.com.

---

* Citations:

• WorkTrek | “Unplanned vs. Planned Maintenance”
  • “Unplanned repairs cost 3-5 times more on average” in comparison to planned maintenance. WorkTrek
• AppWork | “Preventative Maintenance and the Costs of Its Absence”
  • “Emergency repairs often cost 3-4 times more than preventative fixes.” AppWork
• Decades Construction Group | “Benefits of Planned Maintenance vs Reactive Maintenance”
  • “A planned strategy is 260% more cost-effective than a reactive one.” Decades Construction & Facilities Group
• “11 (Costly) Dangers of Deferred Maintenance in Facilities”
  • “Emergency repairs cost significantly more than planned repairs … reactive maintenance plans are generally the most expensive.” chthealthcare.com
• FieldCircle blog | “15 Factors Affecting Your Facility Management Budget”
  • “Reactive maintenance … tends to be more costly than preventive maintenance. It costs anywhere between 20 and 40 percent higher than preventive maintenance.” Zapium

---

Notice:

PRAB recommends that you always follow the maintenance recommendations outlined in the product manuals. Especially if you are processing unique chemicals, metallurgical materials, or other substances, and you need the latest manual, don’t hesitate to contact the PRAB Parts and Service team.