How to stop overbuying or running out of spare parts

The “spare parts trap” most growing teams hit

At first, spare parts are easy: you keep a small box of “just in case” items and call it a day. Then the business grows, equipment count doubles, and suddenly you’re either:

• Overbuying parts “to be safe” (cash tied up on shelves), or
• Running out at the worst time (downtime + urgent shipping)

A simple min/max approach fixes both—especially when your asset management software, asset tracking software, and CMMS are connected to the same equipment records.

What “min/max” actually means (without the warehouse jargon)

• Minimum (min): the lowest quantity you want on hand before you reorder.
• Maximum (max): the quantity you want to have after reordering.

When stock drops to min, you reorder enough to reach max. That’s it.

How to pick min/max numbers (a practical method)

You don’t need perfect math. You need “good enough” that prevents drama.

Step 1: Start with your critical spares list

Pick 10–20 parts that commonly cause downtime. Examples:

• Belts, filters, batteries
• Printer rollers, scanner cables
• Common fasteners for a specific machine

Step 2: Use three inputs

1. Lead time: how long it takes to get the part delivered
2. Usage rate: roughly how many you use per month
3. Risk: how painful it is if you run out

Step 3: Set a starter rule of thumb

• Min = 1–2 weeks of usage (or 1 unit if usage is low but critical)
• Max = 4–8 weeks of usage (unless it expires or you have storage limits)

Connect spares to the equipment they support

This is where a lot of teams lose time: parts exist in a separate spreadsheet with no obvious link to the machine. If you tie each spare part to the asset record, you unlock:

• Faster troubleshooting (“this filter fits that unit”)
• Cleaner purchasing (“we used 3 last month because that line is aging”)
• More reliable planning in your CMMS (maintenance tasks can reserve parts)

Make it a habit: the monthly 20-minute parts review

Once per month, do a quick review:

1. Check which parts hit min (and why)
2. Adjust min/max if usage changed
3. Flag slow movers to stop buying them automatically

Where Bulbthings fits

Bulbthings is an AI-powered, all‑in‑one asset management platform for growing businesses. It helps you keep equipment records and maintenance in one place (CMMS-style), while supporting asset tracking software workflows like locations and assignments—so spare parts and the assets they support stay connected and easy to manage.

If you want fewer “we’re out of stock” emergencies and less money stuck on shelves, try Bulbthings and set up simple min/max rules tied to your equipment.