Сталеві роликові ланцюги Double Plus
Compare product configurations, machine interfaces and operating duty before selecting a model.
Steel Roller Double Plus Chains for pallet and workpiece-carrier conveyors
Steel Roller Double Plus chains use steel roller elements within the same general free-flow conveying concept. They are appropriate only when the required roller material and exact model geometry match the conveyor design.
Family configuration
Steel-roller model codes are maintained separately from plastic-roller models. Confirm pitch, large-roller diameter, small-roller diameter, plate dimensions and guide-rail contact from the exact model row before quoting a replacement.
Start with the conveyor function and carrier interface, then compare the model drawing. For replacement work, use measured dimensions from the installed chain and sprocket rather than a visual match.
Machine interfaces to confirm before model selection
Pitch and strand geometry
Measure several pitches, confirm strand spacing and note whether the conveyor uses matched parallel strands. Record the installed sprocket tooth count and bore so engagement can be checked.
Roller and rail contact
Identify which roller or chain surface carries the load, rail width and material, return support and any side guide. Photograph the contact area when the conveyor is an existing machine.
Carrier underside
Record the pallet contact surfaces, wear strips, locating features, center of gravity and any lift or transfer mechanism that changes how the carrier is supported.
Duty and environment
State conveyor speed, starts per hour, accumulation time, maximum queue, contamination, temperature, lubrication constraints and maintenance access.
Use the drawing to close the dimensional match
Model selection should move from system requirements to the exact chain geometry. Compare pitch, roller diameters and positions, pin diameter and length, plate height and thickness, and any special attachment or hollow-pin feature shown on the drawing. A match on pitch alone is not enough to approve interchangeability.
When dimensions are missing from an old machine record, measure the installed chain over several joints to reduce single-joint error, then add side and end photographs. If the sprocket is worn or is being replaced at the same time, include its tooth count, bore and hub arrangement in the review.
Applications and operating duty
Steel Roller Double Plus Chains may be considered for palletized assembly, inspection, workpiece transfer, accumulation or machine-tending layouts when the chain architecture matches the rail and carrier design. The application name does not by itself confirm a model.
Describe loaded carrier mass, conveyor length, line speed, start/stop frequency and the number of carriers that can occupy the line. For accumulation, state queue length and release sequence. For locating or machining stations, identify the device that supports process forces so those loads are not unintentionally transferred through the conveyor chain.
Selection workflow
| Step | Decision | Information to provide |
|---|---|---|
| 1 | Define the carrier path | Loaded mass, pallet underside, stations, accumulation zones and transfers. |
| 2 | Confirm chain/rail interface | Pitch, roller arrangement, strand spacing, rail section and return support. |
| 3 | Confirm drive interface | Sprocket tooth count, bore, drive position, take-up and shaft alignment. |
| 4 | Check duty and environment | Speed, starts, queue behavior, temperature, contamination and lubrication limits. |
| 5 | Confirm the selected model | Exact product drawing, quantity, documentation and delivery requirement. |
Inspect impact and contact marks before changing the chain
Steel-roller versions should be checked for where load is actually carried. Bright polished bands, edge marks or localized dents on rollers and rails can reveal a misaligned rail joint, an abrupt transfer or a stop that loads the carrier unevenly. Document these locations before replacing the chain. If the conveyor uses two parallel strands, compare rail height, take-up position and sprocket timing on both sides so the replacement does not inherit an existing skew condition.
For a new design, include loaded carrier mass, conveyor length, planned accumulation, speed, starts and transfers in the enquiry. The dimensional drawing remains the basis for pitch, roller position, plate and pin geometry. Special material or surface-treatment requirements should be stated separately so the proposed configuration can be checked without assuming that all steel-roller chains share the same construction details.
If the line includes a lift, turntable or cross-transfer, show that interface in the enquiry because the carrier may see a different support condition than on the straight conveyor.
Commissioning and maintenance checks
After installation, run the line slowly without load and watch chain entry and exit at the sprockets, rail transitions, take-up travel and carrier tracking. Add representative pallets and confirm roller rotation, stop/release behavior and transfers before raising speed. Uneven tracking, scuffing, chain climbing, impact at transfers or different tension between parallel strands should be corrected before normal production use.
Maintenance should trend elongation over a defined number of pitches, roller condition, plate wear, rail wear, sprocket tooth condition and take-up position. Record the same measurement points each time so changes can be compared rather than relying on a single visual inspection.
FAQ and RFQ preparation
Can a visually similar chain be substituted?
Not on appearance alone. Compare the complete dimension set and the installed sprocket, rail and carrier interfaces before approving a replacement.
What photographs are useful?
Provide a side view of several pitches, an end view showing roller or hollow-pin position, the sprocket and the rail/contact surface. Add the model marking if it is still readable.
What should a new-system RFQ include?
Send carrier/load data, conveyor length and speed, process sequence, strand spacing, rail concept, drive/take-up layout, quantity and environment.
What should a replacement RFQ include?
Send installed model, measured dimensions, photographs, sprocket data, quantity and any special matched-length, attachment or material requirement.
Review the engineering selection workflow and application guidance, then use the form below with drawings or marked photographs.
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