Dây đai truyền động HTD
Matching HTD timing belts for 3M, 5M, 8M and 14M pulley systems; belt identification is confirmed before pulley selection.
HTD Timing Belts Configuration Overview
Dây đai truyền động HTD are the mating element for HTD timing pulleys. The first compatibility check is the exact belt tooth family: 3M, 5M, 8M or 14M. Belt width, length and construction then need to match the machine. A pulley and belt should never be paired simply because a nominal pitch number looks similar to another curvilinear system.
Match Belt and Pulley by Profile
Use the complete belt marking and the pulley family together. Confirm pitch, belt width and tooth count before reviewing shaft interface or replacement dimensions.
3M, 5M, 8M and 14M Matching
Smaller 3M and 5M families are commonly considered where compact geometry and lighter transmission requirements dominate, while 8M and 14M cover larger industrial drive envelopes. Actual capacity depends on belt construction, width, tooth engagement, pulley size, speed and service conditions. Final belt selection should therefore use the belt manufacturer or approved drive-design data rather than a universal load value.
Replacement Identification
Record every legible belt marking before removing a worn belt. Count pulley teeth only as a cross-check; do not use tooth count alone to infer pitch. Inspect pulley tooth surfaces and flanges for damage because a new belt fitted to a damaged pulley can suffer rapid edge wear or poor tracking.
For a quotation, send belt profile, width, printed length/code when available, quantity and the pulley series. If the machine has a history of belt failure, also send speed, center distance, tensioning method, environment and photographs of both pulleys.
Ordering, Samples and Commercial Planning
Minimum quantities are set according to product type, manufacturing route and total order value. Standard catalog parts normally follow production-quantity minimums.
New customers may request 1–5 sample pieces when the configuration and production route are suitable. Samples are quoted separately.
Different pulley models can be consolidated. A combined order value of about USD 1,500 is the usual planning point for mixed-model orders.
One- or two-piece quantities may be considered only for engineering validation or a qualified paid-sample requirement, not as retail orders; unit pricing is correspondingly higher.
Standard parts: typically 10–25 business days. Custom components: typically 20–45 business days. Project-based assemblies or related equipment: 45–120 business days where applicable. Final timing is confirmed after drawing, material and quantity review.
EXW, FOB, CIF and DAP are commonly available. FCA, CFR, CPT, CIP and DDP can be discussed for suitable shipments and destinations.
Related Engineering
Compare HTD pulley families, review khớp dây đai và ròng rọc, or use the replacement measurement guide before sending the RFQ.
Use the Complete Belt Marking to Identify the Pulley Family
The belt is often the fastest way to resolve the HTD pitch family on an existing drive. Record the full marking exactly as printed, including pitch family and width information. Do not shorten the record to “5M” or “8M” if other parts of the marking distinguish construction or size. Once the belt identity is established, compare pulleys inside that family by tooth count, working-width series and shaft interface.
If the belt marking is unreadable, preserve the old belt and take close photographs of its tooth side and width. Combine that evidence with the pulley tooth count and dimensions instead of choosing a family from outside diameter alone.
Belt Length and Pulley Tooth Count Solve Different Parts of the Drive
Pulley tooth counts determine the speed relationship between driver and driven shafts. Belt length and center distance determine how those pulleys are connected within the machine layout. A replacement belt code does not automatically define the pulley bore or hub, and a pulley code does not by itself define the correct belt length. Keep component identity and drive geometry as separate checks.
For a new drive, provide the driver and driven speeds or desired ratio, center distance, available pulley diameters, duty information and shaft layout. Belt selection and pulley selection should converge on one compatible system rather than being finalized independently.
Width Matching and Belt-Line Control
The pulley working face must suit the selected belt width while leaving the intended tracking clearance. Overall flange width is not a substitute for working width. On an existing machine, record the belt position relative to the hub and shaft shoulder before the drive is dismantled so a replacement does not move the belt line.
Persistent contact with one flange, edge wear or a belt that walks across the face is a reason to inspect alignment, shaft support, mounting and tension. Do not automatically select a different flange geometry without understanding why the original drive was tracking incorrectly.
Storage, Inspection and Replacement Records
Before installation, check that belt and pulley teeth are clean and free of damage that could interfere with engagement. Follow the belt manufacturer’s installation and tension guidance for the selected belt construction. Keep oil, abrasive debris and other contaminants away where the belt material or machine process requires it.
After commissioning, store the belt designation, pulley tooth counts, width series and shaft-interface records with the machine documentation. If maintenance changes the belt construction or one of the pulleys, record the change so future teams can understand the installed combination without reverse-engineering it again.
Ordering Matching Belts and Pulleys
When belt and pulley are requested together, list the full belt designation plus each pulley family, tooth count, working width and mounting details. For mixed-model orders, keep each pulley on its own line and reference the common belt family where appropriate. If the machine is being repaired, include the old belt marking and photographs of the installed drive.
Standard parts are normally supplied around production-quantity minimums. Qualified new-client 1–5 piece samples can be reviewed at sample pricing when suitable, and mixed models can be combined toward approximately USD 1,500. Final lead time and shipment terms depend on the confirmed configuration and order scope.
Match the Belt Family to the Pulley Before Treating It as a Replacement Set
The belt and pulley belong to the same synchronous system, but the website keeps them visually separate unless the geometry is explicitly supported. Use the pitch-family reference to identify the correct search path, then confirm width, tooth count and shaft interface from the actual components.
HTD Timing Belt FAQ
Is the same pitch number enough to prove compatibility?
No. Preserve the complete tooth family and belt designation. Pitch alone should not be used as a cross-reference between different curvilinear systems.
What should I send for a replacement drive?
Send the belt marking, both pulley tooth counts, belt width, shaft-interface information, center distance where available and clear photographs before disassembly.
Can a new belt fix a tracking problem?
A new belt may replace a worn component, but tracking problems can also involve alignment, shaft support, mounting or pulley condition. Inspect the system rather than treating the belt as the only possible cause.
Diagnosing a Belt-and-Pulley Mismatch
A drive that runs noisily, wears tooth surfaces rapidly or will not track correctly should be inspected before the belt is simply replaced again. Confirm that both pulleys belong to the same intended tooth family as the belt and that the belt width suits the working faces. Look for tooth damage, packed contamination, flange rubbing, loose mounting and signs that the belt line has shifted after maintenance.
If a previous repair changed only one pulley, compare both pulley tooth counts and profiles with the current belt record. An old machine can accumulate mixed components over time. Restoring a controlled set of references is more reliable than choosing a new belt based only on what can be forced onto the pulleys.
RFQ Data for a Belt-and-Pulley Package
Full printed designation, width and quantity.
HTD family, tooth count, width series and shaft interface.
HTD family, tooth count, width series and shaft interface.
Center distance, speed relationship, duty and replacement photographs when applicable.
For a new machine, include the required speed ratio and operating context. For a replacement, send the existing belt marking and photographs before disassembly. Keep any special materials, finishes or inspection requirements attached to the relevant pulley rather than the belt package in general.
New-Drive Information for Belt Selection
For a new synchronous drive, belt selection should be reviewed with the pulley geometry rather than after the pulleys are already fixed. Provide driver speed, driven speed or target ratio, power or torque, center distance, operating hours, starts and stops, ambient conditions and the available guard envelope. Those inputs allow the belt construction and working width to be considered alongside pulley tooth counts and diameters.
Do not treat this page as a universal rating chart. Final capacity, installation and tensioning guidance depends on the selected belt construction and the actual drive. Where the project requires a specific calculation or belt manufacturer recommendation, keep that result with the machine record and the pulley order.
Commercial Planning for Matching Components
Standard belts and catalogue pulleys are normally planned around production quantities, while qualified evaluation samples can be reviewed when the configuration is suitable. Mixed-model orders may combine multiple pulleys and belt references toward a practical order value. If special belt materials, special pulley materials or dedicated processing are required, minimum quantities and lead times follow the applicable manufacturing route.
Final shipment terms and timing are confirmed after the belt and pulley identities, quantities and destination are clear. This prevents commercial assumptions from being attached to an incomplete technical specification.
Condition Review Before a Belt-and-Pulley Order
When the order is a replacement, inspect both components rather than treating the belt as an isolated consumable. Photograph tooth wear, flange condition, contamination and the installed belt line. If the old pulley has visible damage or uncertain alignment, include that finding with the RFQ so the replacement review addresses the cause as well as the belt size.
