I've been the person who maintains our aftermarket checklist for eight years. That role exists because I made 14 documented mistakes before I understood what I was doing. The biggest one involved a comparison between a single FLSmidth Raptor 2500 cone crusher and two smaller cones.
This is not an article about which brand is the best. It's a total-cost comparison, and I'm writing it from the side of the buyer who once submitted a recommendation with the wrong question.
We were adding capacity at a hard-rock mine. The target was roughly 1,800 to 2,000 tonnes per hour. The two options were:
I compared them across four dimensions:
That fourth dimension is the one that changed my recommendation.
The spec that brings people to this page is straightforward: the FLSmidth Raptor 2500 cone crusher horsepower is 2,500 hp (1,864 kW), according to the FLSmidth Raptor 2500 product page, accessed January 2025. But the question should not be just how many horsepower the motor has. It should be how much of that horsepower becomes useful reduction work in your ore.
What I mean is, a 2,500 hp motor means the machine can hold its setting and speed under heavy feed. It doesn't tell you whether your feed size, moisture, and rock hardness fit the chamber. In our model, the Raptor won the horsepower comparison, but the capacity advantage over two smaller cones shrank when we lowered the closed-side setting.
The Raptor 2500's drive train is not just a motor and a sheave. Current packages can include a gear unit supplied by FLSmidth Maag Gear AG. That name does not appear in every brochure, but it shows up on the purchase order. FLSmidth Maag Gear AG has a strong reputation in gear drives for mills and crushers. It also has lead times.
Here is where I made my original error. I knew I should include a gear-unit failure scenario in the risk model. But I thought, what are the odds? Then a reference operation lost a gear unit and stayed down for about two months.
Jonah, the operator who kept pushing me about maintenance, said: you are designing the purchase as if the machine will never break. The plant accountant designs the forecast as if it will break in the sixth month. He was right.
So for this dimension, the conclusion is not about which machine has better parts. It is that a FLSmidth Maag Gear AG drive demands a written aftermarket plan. If you cannot get a lead time and a service commitment in writing, the Raptor's efficiency advantage might not belong in your plant.
Total cost of ownership starts with the quote and ends with the warehouse shelf. The word stock in this context means spare-parts inventory, not FLSmidth stock in the share-market sense. Both are common reasons to read about FLSmidth, but I can only speak to the inventory side. A parts plan is part of the price.
One big crusher usually means less stock than two smaller crushers. You need fewer liners, fewer seals, and fewer hydraulic components. But the lead times are longer. A gear component can be the difference between a one-week outage and a two-month outage.
If I remember correctly, one of our gear-unit seal kits had a 22-week lead time. We did not order it because we did not have a formal criticality process. Now we treat the spare-part stock as a non-negotiable line item in every comparison.
Here is the part that made my spreadsheet uncomfortable. Two smaller crushers give you a partial production option when one machine is down. A single Raptor 2500 is one machine. If it is down, you are at zero, not half.
For a mine that must keep feeding the mill, that risk has a real cost. I added a rental crusher estimate to our model, and it changed the total-cost picture. So glad I did that before the final presentation.
I know what is the drift theory is a search term that shows up near this topic. In an operations context, the useful version is practical drift: the slow separation between written procedure and daily action. It's not the continental drift theory from geology, but there is a similarity. Things move slowly until one day the map looks different.
Practical drift is what creates crusher problems. Someone skips a wear check because production is high. Then skips a lubrication test because nothing seems wrong. Then a gear issue becomes a complete drive replacement. That is why the drift theory matters in a cost comparison.
I still like the FLSmidth Raptor 2500. It is a high-efficiency machine in the right application. But I would choose it only if the plant can accept a long single-machine outage or can carry the critical spare drive components in stock.
I would choose two smaller crushers if losing half of the plant for a month is unacceptable. The higher maintenance cost is the insurance premium for staying online.
Before signing anything, I would ask the FLSmidth Maag Gear AG supplier to confirm every lead time in writing. That lesson came from my 14 documented mistakes, and I hope you do not need to repeat it.
Discuss This Topic
If this article connects to an active wear issue at your plant, use the inquiry form to continue the conversation with our advisory team.
Tell Us What Is Wearing Fastest
Share plant stage, maintenance window, and the result you want to improve so our team can respond with a practical next step.