FAQ Bank

Conveyor engineering, answered.

Every question we've answered across our technical library — searchable, citable, and grouped by category. Each answer links back to the full engineering article.

Modular Systems105

What is the difference between a standard modular belt and a tool-less design?

Tool-less designs often feature captive rods or snap-on links that allow an operator to disassemble the belt by hand or with a simple release lever, whereas traditional modular belts require hammers and punches to drive out hinge pins.

Source: Tool-less Belt Change Designs that Boost OEE on Modular Conveyors

Why choose a modular curve over a traditional fabric belt curve?

Modular curves use positive sprocket drives, eliminating the tracking issues common with fabric belts. They also offer easier repair (replacing a single module vs. an entire belt) and better chemical/temperature resistance.

Source: Mastering Modular Curve Conveyors for Tight-Radius Layouts

Material Handling129

What is the difference between modular sortation and conventional sortation?

Modular sortation uses standardized, pre-engineered units (like diverters/transfers) that can be added or rearranged on a common frame. Conventional sortation is usually a bespoke, fixed installation that is difficult to modify once built.

Source: Modular Sortation Systems for E-commerce Fulfilment Centres

How do I choose between a roller or chain conveyor for pallets?

For standard Euro-pallets with bottom runners, a roller conveyor with 60mm diameter steel rollers is usually the most cost-effective. If the pallet is oriented with runners perpendicular to the direction of travel, a three-strand chain conveyor is often required.

Source: Advanced Pallet Handling Conveyors for End-of-Line Automation

What is Zero Pressure Accumulation (ZPA) in pallet handling?

ZPA is a control logic that ensures pallets never touch each other on the line. Each pallet 'zone' has its own motor or clutch; the system only moves a pallet forward if the next zone is empty, preventing product damage and motor strain.

Source: Advanced Pallet Handling Conveyors for End-of-Line Automation

What is the standard speed for a pallet handling conveyor?

Most heavy-duty pallet handling systems are designed for speeds between 12 and 18 meters per minute. While higher speeds are possible, they increase the risk of load instability and require much more expensive braking and control systems.

Source: Advanced Pallet Handling Conveyors for End-of-Line Automation

Is MDR or AC belt conveyor better for a 3PL warehouse?

24V DC MDR (Motorized Drive Roller) systems are generally better for 3PLs due to their Zero Pressure Accumulation (ZPA) capability, lower energy consumption (up to 50% less), and ease of reconfiguration compared to traditional AC belt conveyors.

Source: Optimizing 3PL Warehouses with Case and Tote Conveyor Systems

Industrial Automation97

Why is my conveyor motor overheating at low speeds?

If the motor is hot, check the 'Torque Boost' settings. Excessive voltage at low frequencies is a common cause of motor overheating in conveyor applications. ensure the motor fan is effective if running at low speeds for long periods.

Source: VFD Tuning and Soft-Start Strategies for Modular Conveyors

Is OPC UA fast enough for high-speed conveyor sorting?

While OPC UA is excellent for data modeling and diagnostics, standard Client/Server architecture may have higher latency than Profinet. However, using OPC UA over TSN (Time-Sensitive Networking) allows for real-time performance suitable for all but the most demanding high-speed motion control.

Source: Mastering OPC UA Integration for Smart Conveyor Modules

Does OPC UA support true 'plug-and-produce' for conveyor modules?

Yes, OPC UA's Information Modeling allows you to define standardized objects. This means you can swap a module from Vendor A with Vendor B with minimal reconfiguration, as long as both follow the VDMA Companion Specification for Material Handling.

Source: Mastering OPC UA Integration for Smart Conveyor Modules

What are OPC UA Companion Specifications?

Companion specifications are standardized information models for specific industries. For conveyors, they ensure that every 'Drive' or 'Photoelectric Sensor' reports its data using the same names and units across different manufacturers.

Source: Mastering OPC UA Integration for Smart Conveyor Modules

What hardware is required to enable OPC UA on a standard conveyor?

You usually need a PLC or a dedicated Edge Gateway that supports OPC UA. Many modern motor starters and VFDs have OPC UA servers built directly into their firmware, eliminating the need for extra hardware.

Source: Mastering OPC UA Integration for Smart Conveyor Modules

What vibration levels are considered 'dangerous' for a conveyor motor?

For most conveyor drives, Velocity (RMS) should be monitored against ISO 10816-3. Generally, levels below 2.8 mm/s are considered 'good,' while levels exceeding 7.1 mm/s for small machines or 11 mm/s for large machines indicate 'unacceptable' condition.

Source: Predictive Maintenance with Vibration Sensors on Conveyor Drives

Why are modular conveyors better for line balancing than custom-fixed systems?

Modular systems use standardized sections that can be easily lengthened, shortened, or rerouted. This allow engineers to add accumulation zones or change motor speeds in specific areas to address new bottlenecks as production needs change.

Source: OEE Improvement Through Line Balancing in Modular Conveyor Systems

What is the difference between Zero Pressure and Minimum Pressure Accumulation?

Zero Pressure Accumulation (ZPA) uses sensors and individual zone motors to ensure products never touch. Minimum Pressure Accumulation allows products to touch but uses low-friction mechanisms to reduce the force buildup that could damage goods.

Source: Advanced Accumulation Conveyors for Effective Buffer Management

Conveyor Components108

What is the difference between IP67 and IP69K for conveyor bearings?

IP69K is a protection rating under ISO 20653 that certifies high-pressure, high-temperature washdown resistance (80-100 bar at 80°C), whereas IP67 only guarantees immersion for a short period. IP69K is the minimum standard for high-care hygienic conveyor components.

Source: Conveyor Bearings and Shaft Seals for Hygienic Applications

Why is 'Solid Oil' or 'Solid Lube' preferred over grease?

Solid lubrication is a polymer matrix saturated with oil that fills the bearing cavity. It is superior in washdown environments because it cannot be washed out by high-pressure water, prevents 'breathing' (moisture intake during temperature changes), and eliminates the need for manual re-greasing.

Source: Conveyor Bearings and Shaft Seals for Hygienic Applications

How often should shaft seals be replaced in a food-grade environment?

Replace seals if you observe visible lubricant leakage, discoloration of the shaft (indicating friction heat), or if the seal lip has lost flexibility. In washdown environments, seals are often treated as wear parts and replaced every 12-24 months depending on cleaning frequency.

Source: Conveyor Bearings and Shaft Seals for Hygienic Applications

Can I replace an old IE1 or IE2 motor with an IE3 motor on an existing conveyor?

Yes, but check dimensions first. IE3 motors sometimes have larger cooling fans or longer stators to achieve efficiency targets, though many manufacturers now offer 'compact' IE3 models that match the physical footprint of older IE2 motors.

Source: The Engineer’s Guide to Energy-Efficient IE3 Motors on Conveyors

Configure your modular conveyor system

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