Buy Polychain GT Carbon Belts Online in Australia
Gates Polychain GT Carbon Belts
The Gates Polychain GT Carbon range is the benchmark for high-power synchronous belt drives in industrial applications — designed to replace roller chain in many drives while delivering longer service life, quieter operation, and lubrication-free running. AIMS Industrial supplies the standard-length Polychain GT Carbon belt range for industrial drives across mining, conveying, machine tool, and process industries. If you’ve got an OEM or third-party belt number, our Gates Belt Cross-Reference tool shows the Gates equivalent we stock.
What makes GT Carbon different
The "GT Carbon" designation refers to two key features: GT tooth geometry (the curvilinear tooth profile with high power-transmission capacity), and carbon-fibre tensile cords (significantly stiffer than aramid or polyester). Together, they produce a synchronous belt that handles industrial drive loads competitively with roller chain at the same drive width.
The pitch sizes we stock
- 8MGT — 8mm pitch, for fractional-power through medium-power industrial drives
- 14MGT — 14mm pitch, the workhorse for heavy-duty industrial drives
- Various widths — sized to match the power requirement of the drive (wider belts handle more power)
Belt designation explained
A typical Polychain GT Carbon designation looks like 14MGT-1610-37 — that's the pitch (14MGT), the pitch length in millimetres (1610), and the belt width in millimetres (37). All three numbers must match the drive specification — substituting a different length or width is rarely workable without redesigning the drive.
Why workshop and maintenance teams choose Polychain
- Quieter operation — significantly quieter than equivalent roller chain
- Lubrication-free — no oil to apply, manage, or contain
- Lower maintenance — no chain stretch, no link wear, no fragmentation in service
- Cleaner — no oil film on surrounding equipment, no debris from chain wear
- Longer life — properly specified Polychain drives often outlast multiple chain replacements
Drive specification — getting it right
Polychain GT Carbon performance depends on the entire drive being specified correctly: the belt, the pulleys (which must be Polychain-specific tooth profile), the centre distance (within the design range), the tensioning system, and the alignment of the drive components. A single wrong specification — incorrect pulley profile, oversized pulley diameter, misalignment — and the belt's life is dramatically reduced. For new drive design, work from Gates' design data; for replacements, match exactly to the existing belt and pulley specifications.
Pulley alignment — the make-or-break
Synchronous belts are unforgiving of misalignment. A few millimetres of pulley misalignment translates into edge-loaded teeth, cord stress, and premature failure. Use a laser alignment tool or a straight-edge to confirm pulley alignment is true before installing the belt; check periodically in service. The belt's tracking should be straight and stable — visible drift toward one edge is the symptom of misalignment.
Tensioning
Use the manufacturer's belt tension specification and verify with a frequency tension meter. Hand-tension testing is unreliable on Polychain belts — the carbon cords are stiff enough that traditional deflection tests don't translate to the actual tension. A frequency meter measures the belt's natural vibration frequency and converts to tension; it's the right tool for synchronous belt tensioning.
Need help with belt selection, drive specification, or cross-reference from existing chain drives? contact our team — we'll work through the application.
Available in Australia and New Zealand
This range ships across Australia from our Milperra (Sydney) warehouse — typically 1-3 business days for in-stock items. New Zealand customers: contact our team for freight quote — typically 5-7 business days via air freight to Auckland, Wellington and Christchurch. Trade and B2B accounts available on application both sides of the Tasman.
People Also Ask — Polychain GT Carbon Belts
Q: What do the two parts of the 'GT Carbon' name in a Polychain belt actually refer to?
GT refers to the curvilinear tooth profile with high power-transmission capacity, and Carbon refers to the carbon-fibre tensile cords, which are significantly stiffer than aramid or polyester cords.
Q: What does each part of a designation like 14MGT-1610-37 mean?
14MGT is the pitch, 1610 is the pitch length in millimetres, and 37 is the belt width in millimetres — all three have to match the drive specification.
Q: Why can't a standard tension-deflection test be used to tension a Polychain GT Carbon belt?
The carbon cords are stiff enough that traditional hand deflection testing doesn't translate to actual tension — a frequency tension meter, which measures the belt's natural vibration frequency, is the right tool instead.
Q: Why can't a Polychain belt be fitted to pulleys designed for roller chain?
The pulleys have to carry the Polychain-specific tooth profile — a chain sprocket's tooth geometry doesn't match a synchronous belt's teeth, so the drive has to be specified around Polychain pulleys from the start.
Q: What's the visible symptom of pulley misalignment on a running Polychain belt?
Visible drift of the belt toward one edge — even a few millimetres of pulley misalignment translates into edge-loaded teeth, cord stress, and premature failure.