A conveyor proposal is only as useful as the application information behind it. Two systems can look similar in a layout and behave very differently with real products. The difference often appears at transfers, during accumulation, or when the line restarts after a stoppage.
A useful specification describes the product, the required flow, and the conditions under which the system must operate. That gives suppliers a common basis for proposing equipment and gives the buyer a clear basis for acceptance.
Start with the product and its variation
Record the minimum and maximum dimensions, weight, orientation, and condition of every product the conveyor must handle. Include the actual contact surface: a rigid tray behaves differently from a flexible pouch, a warped carton, or an assembly with protruding components.
Provide drawings, photographs, and representative samples where possible. Identify surfaces that cannot be scratched, areas that cannot contact guides, and any tendency to tip, slide, or rotate. If a carrier or pallet is required, include its dimensions, weight, and return path.
Clarify what “modular” means in the request. A modular conveyor platform assembled from standard sections is not necessarily a conveyor with a modular plastic belt. Belt, chain, roller, and pallet systems address different handling requirements; the product and process should guide the choice.
Translate output targets into flow requirements
State the required sustained output and any short periods of higher demand. Include product spacing and the operating pattern: continuous travel, indexing, or stop-and-release movement.
For a simple single-lane flow, conveyor speed can be estimated as product pitch multiplied by products per minute. Pitch includes product length in the travel direction plus the gap. For example, a hypothetical 200 mm product with a 100 mm gap at 30 products per minute requires 9 m/min of travel speed. This is a flow estimate, not a complete equipment rating: transfers, control response, stability, and load still need verification.
Increasing conveyor speed will not increase line output when another process remains the bottleneck. Specify the line requirement rather than treating maximum belt speed as the purchasing target.
Give every transfer an explicit requirement
Transfers deserve as much attention as the straight conveyor sections. Document the upstream and downstream equipment, direction of travel, elevations, product orientation, and available space. Identify whether the product must cross a gap, change direction, or stop at a repeatable position.
Small products and products with irregular bases may need dedicated transfer arrangements. Ask the supplier to explain how the proposed arrangement supports the smallest and least stable product. For positioning operations, distinguish transport accuracy from the locating accuracy provided by a stop, fixture, or other device.
Decide what happens when the next station stops
Define whether products may touch during accumulation and what contact force or cosmetic damage is acceptable. Some products can queue against one another; others need separation, controlled zones, or carriers. FlexLink describes accumulation as temporary product holding and offers both FIFO and LIFO arrangements; the required sequence should be part of the specification. [1]
For a hypothetical inflow of 20 products per minute and a 90-second downstream interruption, 30 free product positions would be needed to keep accepting that inflow, assuming no discharge. Existing occupancy, physical pitch, and operating margin must also be considered. Confirm how the queue clears after restart and whether downstream equipment has capacity to recover.
Define controls and acceptance before ordering
Agree on machine handshakes, sensor responsibilities, full and empty behavior, fault indication, and restart sequences. Assign responsibility for the interface between conveyor controls and connected equipment. Identify destination-site utilities, access, environmental conditions, and applicable safety requirements during engineering review.
Acceptance should use agreed products and operating conditions. Define the sustained rate, test duration, transfer performance, permitted damage, and changeover requirements. Include blocked discharge and restart tests, not just an empty conveyor demonstration.
What to include in your inquiry
- Product range, samples, carrier details, and handling restrictions.
- Layout, travel direction, elevations, transfer interfaces, and service access.
- Required output, product pitch, accumulation duration, and sequence rules.
- Controls interfaces, utilities, operating environment, and responsibility boundaries.
- Acceptance conditions, documentation, training, and spare-parts expectations.
A complete inquiry helps suppliers identify the difficult parts early. The goal is a conveyor that maintains the required flow with real products through normal production, interruptions, and recovery.