A rolling mill wears according to how much steel it rolls, not according to the calendar, yet many mill PM plans still run on calendar intervals copied from the commissioning manual. This template sets out preventive maintenance for stands, work and backup rolls, chocks and bearings, spindles, gearboxes and main drives, with a trigger type for each task. It then shows how AI moves those intervals as tonnage and vibration change, which you can see in a short live demo.
A Rolling Mill PM Schedule Built on Tonnage, Condition and the Calendar
Use this template for stands, rolls, chocks, gearboxes and main drives. iFactory's PM Scheduler runs tonnage-based and calendar PMs together. Its AI stretches or pulls intervals using vibration and load data and pushes the revised jobs straight to the maintenance kanban.
Four Ways to Trigger a PM, and Where Each One Fits
A stand that rolls a heavy-gauge, high-strength product mix all week wears very differently from the same stand rolling light gauge at half load. A fixed calendar interval either over-maintains the quiet stand or under-maintains the busy one. A practical mill PM plan mixes four trigger types and assigns each task the one that matches how it actually wears. Our reliability team can help assign trigger types to your asset list.
For tasks driven by time rather than use, such as lube oil sampling, safety device tests, filter changes and statutory inspections.
For anything that wears with throughput: rolls, chock bearings, guides, spindle wear parts and roll-neck seals.
For assets with a measurable early warning, such as vibration on gearboxes and drives, bearing temperature, oil debris and motor current.
For checks that must happen after a cobble, an overload trip, a bearing temperature alarm or a hard stand stop.
Rolling Mill PM Schedule: Stands, Rolls and Drives
Use the matrix below as a starting structure. The intervals are typical starting points, not limits. Always reconcile them with your mill and bearing OEM manuals, your lubrication supplier and your own failure history, then let condition data refine them over time. To have this template loaded into your system, book a setup session.
Load This Template and Let the Data Tune It
iFactory's PM Scheduler imports your asset list, runs tonnage and calendar triggers side by side, and proposes interval changes from vibration and load trends, each with a reason your planner can approve.
How a Tonnage Trigger Works in Practice
A tonnage trigger counts the steel a stand or component has rolled since its last service and raises the PM when it reaches a set percentage of its limit. That leaves time to plan the work into the next roll change instead of reacting at 100%. Because the counter belongs to the component rather than the stand, a chock or spindle that moves between stands carries its own tonnage history with it. The worked example below uses illustrative numbers, so substitute your own campaign limits. Our support team can help you set limits per stand.
For example, a component rated for 3,000 t between services on this stand.
Rolled tonnage comes automatically from the level 2 or MES system for each coil, so nobody keys it in.
At 80%, which is 2,400 t, the PM is generated and assigned to the next planned roll-change window.
When the job closes, the counter resets and the history records the tonnage actually achieved.
Stretch Where Assets Are Healthy, Pull Where They Are Stressed
A fixed interval is a guess made before the mill has any history. Once vibration, load and temperature data are flowing, the scheduler can tell which assets are wearing faster or slower than planned and propose moving their PMs accordingly. Every move stays inside guardrails you set, and none goes past an OEM limit. You can see guardrail setup in a short demo.
- Vibration flat and below baseline over several intervals
- Light product mix and low stand load
- Recent inspections found little or no wear
- Vibration or oil debris trending up
- Heavy or high-strength product campaign
- A cobble, overload or temperature event
- Maximum stretch per step set by you
- OEM and statutory limits respected
- Planner approval before any change
The Mill Maintenance Rhythm at a Glance
The template comes together as a rhythm the crew can follow. Routine rounds run every shift, roll-change PMs follow tonnage, and deeper work is saved for planned outages. The strip below shows how the tasks group by frequency. Our reliability team can help you balance this rhythm against your production schedule.
Spindle lube, leak checks, cooling spray visual check, bearing temperature review
Work roll chocks, guides, AGC calibration, coolant nozzles at the stand
Descaler nozzles, roll cooling headers, lube system checks
Gearbox oil samples, motor vibration routes, drive filters, spindle inspection
Gear contact checks, motor electrical tests, housing inspection, major overhauls
Revised PMs Land on the Board, Not in a Spreadsheet
A PM template only works if its jobs reach the crew at the right time. When a trigger fires, or an interval moves, iFactory generates or reschedules the job and places it on the maintenance kanban in the right roll-change window, with the task list, parts and permits attached. To see your own board populated from the template, book a walkthrough.
Four Mistakes That Undermine a Rolling Mill PM Plan
Most mill PM plans don't fail because a task is missing. They fail because the plan doesn't reflect how the mill actually runs. These four gaps come up repeatedly when mills move from spreadsheets to a condition-driven scheduler, and each one is cheap to fix once you can see it. Our reliability team can review your plan for them.
Roughing and finishing stands, or early and late stands in a train, see very different loads. A single interval across the mill guarantees that some stands are over-maintained and others under-maintained.
Cobbles and overload trips are treated as production events, not maintenance triggers, so hidden damage to spindles and couplings goes uninspected until it fails.
When chock bearings aren't tracked as individual serialized assets, their own tonnage and history get lost every time they move between stands.
Jobs scheduled by date instead of into roll-change windows get deferred again and again, until the backlog hides the critical ones.
Scheduler, Data Connections and AI Server in One Package
Condition-driven PM needs tonnage and sensor data to flow continuously. iFactory provides this as a turnkey bundle: a pre-configured NVIDIA AI server ships racked and ready with the PM Scheduler and analytics pre-loaded. You rack it, plug in power and Ethernet, and the AI is live. To scope it for your mill, request a turnkey quote.
- Pre-configured NVIDIA AI edge server, racked and ready
- Connections to your level 2 / MES tonnage and to vibration sensors
- Your asset hierarchy and this PM template loaded
- Cabling and plant network setup
- PLC/SCADA integration and maintenance kanban
- Planner and crew training
- 24×7 remote monitoring
Server installed, tonnage and sensor feeds connected, asset list and template imported.
Baselines learned, trial interval proposals made on one stand group.
Full mill on the scheduler, planners trained on approvals and guardrails.
PM Scheduler With Condition Triggers, Built for Mills
iFactory's PM Scheduler handles the trigger types a rolling mill needs and connects them to the data that should drive them. Our support team can review your current PM plan before you migrate.
What Mill Maintenance Planners Ask
Put Your Mill PM Plan on Tonnage and Condition
Load the template, connect tonnage and vibration data, and let AI tune intervals within your guardrails, with every revised job on the kanban in the right roll-change window. The full system is delivered turnkey and goes live in 6 to 12 weeks.
