Insights · Quoting & supply

What is Kanban and JIT supply in subcontract machining?

Last reviewed: 9 July 2026

The short answer

Kanban and Just-In-Time (JIT) are supply methods that deliver parts as they are needed rather than in large batches held as stock. They cut inventory, free up cash and stabilise lead times. Milltech runs Kanban and JIT programmes in long-term supply partnerships, scheduled through Tricorn® ERP.

For a buyer running a production line, how parts arrive matters as much as how they are made. Kanban and JIT are the supply models that keep inventory low and deliveries predictable. Here is what they mean.

What is Kanban supply?

Kanban is a pull-based replenishment system. Instead of ordering large batches on a guess, replenishment is triggered by actual usage — when stock falls to a defined level, a signal (a card, a bin, or an electronic trigger) calls off the next batch. It keeps a small, controlled buffer of parts without over-ordering or running dry.

What is Just-In-Time (JIT) supply?

Just-In-Time delivers parts just as they are needed in the customer's process, rather than stockpiling them. The goal is to minimise inventory — and the cash, space and risk tied up in it — by synchronising supply with demand.

Why do buyers use Kanban and JIT?

Because inventory is expensive. Holding stock ties up cash and floor space and risks obsolescence. Kanban and JIT cut that inventory while giving predictable, scheduled deliveries. They work best in an ongoing supply partnership where demand is steady enough to schedule against, and where the supplier's lead times are dependable.

How does Milltech run Kanban and JIT?

Milltech runs Kanban and JIT production as part of long-term, strategic supply partnerships — scheduled and tracked live through Tricorn® ERP. That covers component manufacture, ancillary procurement, product build and complete supply of finished assemblies, so a customer can rely on scheduled call-off rather than holding stock themselves.

FAQ

Frequently asked questions

What is Kanban supply?

A pull-based system where replenishment is triggered by actual usage — when stock drops to a set level, a signal calls off the next batch. It keeps a small, controlled buffer without over-ordering.

What is Just-In-Time (JIT) supply?

A method where parts arrive just as they are needed in the customer's process, rather than being stockpiled. It minimises inventory and the cash and space tied up in it.

Why do buyers use Kanban and JIT?

To cut inventory and free up cash and floor space, and to get predictable, scheduled deliveries. They work best in an ongoing supply partnership where demand is steady enough to schedule against.

What does a subcontractor need to run Kanban or JIT?

Reliable capacity, dependable lead times and good production control. An ERP system that schedules and tracks jobs is essential to hitting scheduled call-offs consistently.

How does Milltech run Kanban and JIT?

Milltech runs Kanban and JIT production as part of strategic supply partnerships — scheduled and tracked through Tricorn® ERP — covering component manufacture, procurement, product build and finished-assembly supply.

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