Belts · Pulleys · Bushes · Drive engineering
Free calculators, installation and tensioning best practice, and troubleshooting guides for V-belt, wedge-belt and timing-belt drives. Plus a full range of belts, pulleys and bushes.
Why belts fail
Most belts don't wear out. They're killed by the drive they run on.
¼° for timing and poly-V belts. An offset of 9 mm over a metre is already ½°. Align properly
16 mm per metre of span, at the force the calculator gives you. Not "a thumb's worth". Tension properly
Gauge the pulleys at every belt change. Worn grooves wreck new belts in weeks. Gauge properly
Engineering library
Best industry practice, the formulas behind it, and the South African regulations that apply.
Classical, wedge, banded, cogged, poly-V, timing, round PU, flat. Dimensions, markings and how to identify a belt.
DesignTen steps from motor to matched set, with service factors and a full worked example.
InstallLockout, fitting, alignment tolerances, force-deflection and frequency tensioning, run-in, guarding.
PulleysDatum vs outside diameter, groove wear, rim speed, balancing, bush fitting and torques.
DiagnoseRead the failed belt: noise, slip, wear patterns, cracking, turnover, vibration, bearing failures.
MaintainInspection schedule, storage, breakdown kits, and what belt choice does to your power bill.
IndustriesSugar, timber, packhouses, nuts, mills, food, pumps, fans, crushers, farms.
ReferenceTerms, ISO/DIN/RMA standards, and the sources behind this site.
Calculators
Every result can be sent to us on WhatsApp for a quote in one tap.
Service factor, section, pulleys, belt, centre distance, number of belts, tension, shaft load.
SpeedDriven speed, or the pulley you need for a target speed, with slip.
GeometryDatum length, nearest standard belt, arc of contact, adjustment range.
TensionStatic tension, deflection force, sonic-meter frequency, shaft load.
Timing beltsPitch diameters, belt teeth, exact centres, teeth in mesh.
CostSavings from cogged or synchronous belts, and the cost of waiting for a belt.
Work with us
Pick the one that fits. They all start with a WhatsApp or a call.
We walk your belt drives and give you a written list:
Every belt on your critical machines, in matched sets, labelled per machine, so the next breakdown is a quick swap.
Spares shops, co-ops, bearing shops and hardware stores: sell quality belts, pulleys and bushes with technical back-up down the road.
Industries
Application notes for each: what the drives look like, what goes wrong, what we recommend.
Get a quote
Fill this in and press Send on WhatsApp. It opens WhatsApp with your request written out: attach a photo of the belt markings and send.
Used a calculator? Its Send these results button fills the details in for you.
Yes. Photograph the markings on the old belt. If they're worn off, measure the pulleys' outside diameters and the centre distance and use the identify-a-belt calculator, or ask us to come and measure.
For speeds, lengths and geometry, yes: those are exact formulas. For the number of belts on a critical drive, the power rating per belt must come from the maker's tables. Send us the result and we'll check it against the manufacturer's data.
Yes, by our own delivery or by courier. You get a delivery time with your quote.
Yes. Timing belts, round PU belts and many others are made to length, and pulleys can be machined to your drawing.
EFT or cash on delivery for once-off orders. Businesses that order regularly can apply for a 30-day trade account.