How to choose a CMMS for a manufacturing SME: an evaluation grid

Why a manufacturing SME needs structured CMMS

In a small or mid-sized manufacturer, a stopped production line quickly costs thousands of euros. Yet many workshops still run their maintenance with a spreadsheet, a notebook, and the team leader's memory. A [CMMS](/en/glossaire/gmao) (Computerized Maintenance Management System) replaces these scattered tools with a single source of truth: equipment, work orders, spare parts, and history are consolidated in one place.

The point is not merely to "tidy up" information. A well-chosen CMMS turns reactive maintenance into managed, measurable, and budgeted maintenance. The catch is selecting the right CMMS software in light of a manufacturing SME's real constraints: a small team, a tight budget, and the need for a tool that becomes operational quickly.

The three maintenance strategies to cover

A credible CMMS must be able to orchestrate the three main families of intervention. That is the first criterion in your grid.

Corrective maintenance

This is repair after a breakdown. The CMMS must let you report a failure, immediately open a work order, and record the diagnosis, parts consumed, and time spent. The goal: never again lose the history of a recurring breakdown.

Preventive maintenance

Here, you intervene before the breakdown, based on a schedule or a usage meter (operating hours, cycles, kilometers). Check that the tool automatically generates recurring work orders (weekly lubrication, quarterly overhaul) and sends reminders to technicians.

Condition-based maintenance

More advanced, it triggers the intervention based on a measured threshold: temperature, vibration, pressure. The data often comes from IoT sensors. A modern CMMS must be able to receive these readings and raise an alert when a value moves out of its normal range. Not every manufacturing SME needs this yet, but it is a factor in how future-proof your choice will be.

The work order: the operational core

The work order (WO) is the basic unit of a CMMS. Assess its functional depth carefully:

• A clear lifecycle: open → assigned → in progress → awaiting part → closed.
• Assignment: the ability to assign a technician, a team, a priority, and a due date.
• Field data capture: parts consumed, labor, photos, measured readings.
• Mobility: a technician must be able to view and update a WO from the shop floor, ideally even offline.
• Traceability: who did what, when, and with which parts — useful for audit and warranty.

A good WO is also a future indicator: every minute logged feeds your reliability statistics.

The indicators that drive performance: MTBF and MTTR

No measurement, no management. Two [indicators](/en/glossaire/kpi) structure any reliability effort, and your CMMS must calculate them automatically.

• [MTBF](/en/glossaire/mtbf) (Mean Time Between Failures) measures the reliability of a piece of equipment. The higher it is, the more stable the machine. A declining MTBF signals an asset reaching end of life or a drifting setting.
• [MTTR](/en/glossaire/mttr) (Mean Time To Repair) measures maintainability — that is, your ability to bring equipment back into service. A high MTTR often points to missing spare parts, absent documentation, or a skills gap.

Combined, MTBF and MTTR give the availability of a piece of equipment. A serious evaluation grid checks that these ratios are calculated per machine, per site, and over rolling periods — not just shown as a single global aggregate. The most complete tools add a preventive-compliance rate and a maintenance cost per asset.

Asset and spare-parts management

A CMMS is only as good as the quality of its asset repository. Examine:

• The equipment hierarchy: plant → workshop → line → machine → sub-assembly. This hierarchy lets you trace a breakdown back to its root cause.
• The equipment record: make, model, serial number, commissioning date, technical documentation, full history.
• Criticality: the ability to classify assets (vital, important, secondary) in order to prioritize preventive work where the stakes are highest.

On the spare-parts side, maintenance and logistics meet. The CMMS must know the available stock, trigger a replenishment below a minimum threshold, and automatically decrement inventory when a part is consumed on a work order. An [ABC method](/en/glossaire/methode-abc) classification helps concentrate efforts on the most strategic items. This is why a CMMS integrated with a [stock management](/en/solutions/stock) module avoids double entry and the stockouts that send MTTR soaring.

The evaluation grid: 8 selection criteria

To compare solutions objectively, score each CMMS software on these dimensions:

1. Coverage of the 3 strategies: corrective, preventive, condition-based (sensors).
2. Work orders: lifecycle, mobility, offline field data capture.
3. Native indicators: MTBF, MTTR, availability, costs, calculated without an external spreadsheet.
4. Asset repository: hierarchy, criticality, documentation, history.
5. Parts inventory: thresholds, replenishment, automatic decrement on WO.
6. Integration: links to accounting, purchasing, the supplier portal, and an open [API](/en/glossaire/api-rest) for your other tools.
7. Ease of adoption: interface language, deployment time, training a small team.
8. Total cost of ownership: the license, but also configuration, data migration, and application maintenance.

Weight these criteria according to your priorities: a growing manufacturing SME will value integration and scalability, while a mature workshop will insist on the granularity of its indicators.

Discover the eyeot approach

Within the eyeot ERP, the [maintenance & CMMS](/en/solutions/maintenance) module covers preventive, corrective, and condition-based maintenance with IoT sensors, manages work orders, assets, and their criticality, and calculates MTBF/MTTR indicators. Because it shares the same foundation as stock, purchasing, and the [cross-module intelligence](/en/solutions/intelligence) module, your maintenance data talks natively to the rest of the business, with no re-entry.

If you are structuring maintenance at your manufacturing SME, eyeot's free individual account lets you evaluate the platform under real conditions. A good way to test your evaluation grid against a concrete case before you decide.