Changeover bottleneck

Changeover as Bottleneck: Setup Time Reducing Capacity More Than Machine Speed

Multi-product line where production assumption was that machine speed limited throughput, but changeover dynamics actually limited capacity.

Focus AreaConsumer Products Manufacturing
Assets4 assembly lines
Operating Shifts2 per day

Assumed Bottleneck

Line ran 3 different products in rotation. Throughput was limited; assumption was machine speed. Equipment upgrade was planned to increase speed.

What Became Visible

Detailed throughput analysis revealed: Machine speed enabled 200 units/day. Changeover duration (2.8 hours daily) consumed 30% of available production time. Changeover was the bottleneck, not speed.

Changeover Optimization Focus

Changeover procedures optimized, reducing setup time from 2.8 hours to 1.5 hours daily. This recovered production capacity equivalent to 25% throughput increase.

How it worked: Bottleneck analysis redirected investment from equipment speed to changeover efficiency. This had higher ROI and was implementable faster.

Results

Daily changeover time
2.8 hours1.5 hoursvia procedure optimization
Capacity recovered
+25%

equivalent to speed upgrade

Investment cost
₹0

vs ₹50+ lakhs for equipment upgrade

Annual throughput gain
₹38 lakhs

from changeover optimization

Key Insight

Throughput bottlenecks aren't always obvious. Process analysis may reveal that non-machine factors (changeover, material handling) are the true constraints.

Operational Reality

The facility was planning equipment investment. Analysis revealed changeover was the bottleneck. Procedure optimization was faster and cheaper.

Related topicsChangeover bottlenecksetup time optimizationchangeover efficiencylean changeover

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