Grinders have a tough job and work under demanding conditions. They have to run long hours and efficiently reduce wood material. In addition, sometimes they encounter contaminant material, such as metal, rocks or gravel.
That’s why proper maintenance is critical for your grinder to function properly. Some maintenance best practices are obvious. You should follow a manufacturer’s recommendations for regular maintenance or a preventative maintenance program. And don’t take shortcuts, these mistakes will cost you more in the end. But what else should pallet and lumber companies know when it comes to maintenance best practices?
The Pallet Enterprise asked suppliers to provide information and recommendations for maintaining grinding equipment. The following are some key suggestions for better maintenance.
Cresswood
Cresswood is built on a solid reputation for strong post-sale support; that’s why nearly 50% of sales come from repeat customers. Cresswood has a team of dedicated field service technicians whose job is helping customers get the most out of their investment while providing OEM maintenance guidelines and expert troubleshooting. Phone support is free for the life of the equipment, and on-site support from a factory trained technician is available upon request.
Ryan Butzman, president of Cresswood, stated, “Cresswood lives with the motto that a down machine is always its highest priority. We have developed a useful list of how-to videos demonstrating proper maintenance procedures for most of the common requirements – rotating cutters and anvils, replacing holders on the rotor, mounting screens, and proper setting of ram guides.”
Also, Cresswood maintains a large inventory of all OEM tooling, as well as all commonly ordered replacement parts for same-day shipment. Butzman added, “We have grinders in the field that have been running for well over twenty years, and we proudly support all legacy parts for the life of the grinders we sell.”
Every grinding application is unique, and each unit shipped is accompanied by a maintenance manual specifically tailored to long-term success. This document clearly outlines the recommended intervals between tooling rotations, re-setting the ram guides and wipers, right down to the daily tasks of greasing bearings and clearing fines out of the bearing pockets. This simple checklist outlines intervals for oil changes in the gearbox for vertical units, ram wear parts, and upkeep on bearings and hydraulic units.
Cresswood also offers significant discounts on tooling and an extension of the OEM warranty for up to three years for getting on an annual tooling plan. This plan also provides a 10% discount on all Cresswood manufactured parts. As part of the sale, Cresswood can offer scheduled inspections from factory-trained technicians.
Cresswood’s grinders are engineered for durability in the toughest environments, but a dedication to proper use and regular maintenance is the key to the machines running efficiently for the long-haul.
Butzman warned, “Keeping tramp metal out of the machine is a big deal as it can cause serious damage to the tooling and unnecessary stress on the drive train. In many production environments, it is not so much a question of if but when and how often it occurs.”
Given this reality, Cresswood has engineered an exclusive drive retention system that maintains the integrity of the drive connection to the rotor in the event of a hard stop from metal contamination. A proximity switch on the idle shaft of the rotor constantly monitors rotation and immediately shuts off power to the drive motor if it is suddenly interrupted. Outfitting the unit with a fluid coupling is yet another protective feature Cresswood offers for the grinder’s drive train. Metal detection can also be integrated in many situations into infeed conveyors to provide a valuable safeguard that pays for itself very quickly.
Boulware Equipment
Boulware Equipment provides customers with the most up-to-date information and recommendations for maintaining their grinding system, including drawings, video tutorials, manuals, tool recommendations, and online troubleshooting via phone or email. The company also sends annual reminders for long-term service requirements, such as replacing RAM wear parts at 5-6,000 hours. The company can provide complete maintenance service on a monthly, quarterly, biannual, or annual schedule.
Depending on the system and usage, Boulware recommends inspections and service two to six times per year. “The less commitment there is to regular maintenance, the higher the cost of ownership,” said Brad Boulware, president of Boulware Equipment.
Daily or at least weekly maintenance includes inspecting moving parts, cleaning conveyor and magnets and, for trailer-mounted units, inspecting the tires for leaks and inside walls for damage. Dust should be blown out or otherwise cleared from bearing pockets of the Cresswood grinder and the conveyor tail pulley daily.
The first service begins at 250-300 hours with turning cutters and greasing all bearings. The next occurs at 500 hours: checking the gearbox position and oil level and ensuring the bushing is tight, and inspecting RAM guides and hold-downs.
Rotochopper
Like any piece of heavy machinery, an industrial horizontal grinder’s wear parts will not last forever. Through daily use and occasional encounters with ungrindable objects, wear parts degrade, eventually forcing operations to a standstill while repairs are made or replacements are installed.
Regular maintenance and thorough cleaning don’t just increase the longevity of the grinder and its wear parts. They also save your operation money, keep employees safe, and boost efficiency across the board.
Staying on top of maintenance through a combination of daily inspection and a planned preventative maintenance program extends the life of a grinder’s internal components, making costly repairs and replacements less frequent. Regularly cleaning and inspecting critical grinder components, like sizing screens and replaceable mounts, also helps operators address concerns before they take the grinder offline, minimizing downtime and maximizing grinder productivity.
Malfunctioning or worn-out parts produce substandard end products and lead to more frequent or expensive breakdowns. Regular cleaning helps mitigate the buildup of dirt, sawdust, organic material, and other debris, preventing blockages that can reduce the equipment’s overall efficiency. Likewise, daily grinder inspections help ensure small concerns and aging wear parts are addressed before they compound into expensive and disruptive issues.
When parts do eventually wear out, product specialist experts can quickly and easily replace vital grinder components, maximizing uptime and keeping equipment in service longer. Product specialist experts also perform routine optimizations on equipment — like aligning conveyor belts and adjusting amperage draws — that help machines run at peak capacity and ensure your grinder can process feedstock down to the size your industry demands.
Preventative and daily maintenance, as well as regular grinder cleaning, also ensure all safety features are operating as intended and help keep employees safe.
As with any piece of heavy machinery, it’s important that horizontal grinder operators follow proper fire safety protocols. Before starting up and after shutting down, operators should thoroughly clean all hot surfaces to prevent the buildup of combustible debris. Most importantly, site managers should store combustible materials away from grinders and other heat producing equipment to minimize the chances of ignition.
To maximize the life of their equipment, project managers should develop a comprehensive maintenance plan that includes daily startup and shutdown procedures, as well as maintenance checklists for operators to use on the job.
Rotochopper offers a comprehensive preventative maintenance program designed to keep grinders in excellent condition for as long as possible. Staff experts provide on-site service to ensure equipment is operating at peak efficiency. Rotochopper noted, “We train operators on proper safety protocols and provide guidance for maintenance checklists.”
Vecoplan LLC
Vecoplan emphasizes that consistent, proactive maintenance is essential to keeping grinders operating efficiently under demanding, real-world conditions. To support this, the company provides detailed maintenance checklists that outline daily, weekly, and monthly inspections, helping maintenance teams keep machines running reliably despite the many variables found in wood processing, most notably the presence of foreign material.
Contaminants such as metal pose one of the greatest risks to grinder performance. Regular inspection of metal detectors is strongly recommended to ensure proper operation and prevent costly damage. Key mechanical components also require routine attention: main drive bearings should be greased every 40 operating hours to maintain lower operating temperatures and smooth performance, while wear items should be inspected at the same interval to monitor wear rates that vary by material type.
One often-overlooked but critical inspection point is the cutter-to-counter-knife (bed knife) gap. Excessive clearance caused by wear can place unnecessary strain on belts and fluid couplings, significantly reducing throughput and overall efficiency. Checking and adjusting this gap every 40 operating hours—typically a 30-minute task—helps optimize cutting performance and protect driveline components. Hydraulic systems also demand routine care, with filter changes recommended every six months and hydraulic fluid replaced annually.
Plant environments are frequently dusty, and electric motors are particularly vulnerable to heat buildup when airflow is restricted by debris. Regularly cleaning motors takes only minutes but helps prevent overheating, bearing failure, and unplanned downtime. Operators are also encouraged to stay alert to changes in machine sound; unusual noise is often an early warning sign that inspection is needed before a minor issue becomes a major failure.
In addition to routine maintenance, Vecoplan stresses the importance of using original manufacturer wear parts—especially cutters and counterknives. These components are engineered to precise tolerances that preserve cutting geometry, rotor balance, and critical clearances. Using genuine parts reduces vibration, uneven wear, and unnecessary stress on bearings, drives, and hydraulic systems, helping maintain throughput, control energy consumption, and extend equipment life. While lower-cost alternatives may seem attractive, variations in metallurgy and dimensional accuracy often lead to premature wear, increased power draw, and higher total operating costs over time.
Partner with Your Supplier
Partnering with key suppliers is a great way to ensure that your maintenance program keeps your grinder running well. They know their products better than anyone. If you haven’t discussed maintenance with your supplier, consider making that a priority in 2026. How can you do a better job of having wear parts on hand to reduce downtime? Does your supplier offer training workshops or online videos? What can you do to ensure material consistency? It all starts with making your grinder maintenance a priority in your maintenance department.
