Reorder Quantity
Reorder quantity is the number of spare parts or units ordered when inventory replenishment is triggered.
What this term means in maintenance
Reorder quantity is the number of spare parts or units ordered when inventory replenishment is triggered.
What affects reorder quantity
The quantity may consider:
- Demand
- Lead time
- Minimum order quantity
- Package size
- Maximum stock
- Safety stock
- Criticality
- Shelf life
- Storage capacity
- Order cost
Practical example
A filter reaches its reorder point and the configured reorder quantity is 20 units.
Fixed and calculated quantities
Organizations may use a fixed quantity, Min-Max replenishment, EOQ, or manual review.
Maintenance context
Rare critical spares usually require a risk-based decision rather than a consumption-only calculation.
Common mistake
Ordering the supplier minimum without checking current stock and open purchase orders can create excess inventory.
How this term differs
Reorder Quantity is the quantity ordered after replenishment is triggered. It is related to Reorder Point, Economic Order Quantity, and Min-Max Inventory, but these terms describe different records, measures, roles, strategies, or decisions and should not be used interchangeably.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Reorder Point
A reorder point is the inventory level at which replenishment should be initiated so expected demand can be covered during supplier lead time.
Economic Order Quantity
Economic Order Quantity is a calculation used to estimate an order quantity that balances ordering cost and inventory holding cost.
Min-Max Inventory
Min-Max inventory is a replenishment method using a minimum trigger level and a maximum target level for each stocked item.
Glossary FAQs
- What is reorder quantity?
The number of units ordered when replenishment is triggered.
- What affects the quantity?
Demand, lead time, package size, minimum order, maximum stock, criticality, shelf life, and storage.
- Is it the same as reorder point?
No. Reorder point triggers the order; reorder quantity determines how much is ordered.