Wheel Loader Pass Matching: How Many Passes Fill Your Tipper or Feed Your Crusher?
Watch — 67 seconds: the complete SDLG range in Kenya
The loader family this pass matching guide serves — every SDLG machine in one film from the Ruai yard.
Video not playing? Download it or watch on YouTube — and for a machine of your own, call +254 718 686 967.
The cheapest production upgrade on a loading site is not a bigger bucket, a newer machine or a faster operator — it is the right number of passes, because every pass too many is a cycle wasted, and every pass too few is a queue forming. This guide explains wheel loader pass matching — the passes to fill tipper loads and the crusher feed rate that decide site production — through the four inputs that decide it: bucket fill factor, material density, truck capacity and cycle time wheel loader realities, with editable example structures across the size classes.
Quick answers if you are matching now: the passes per load are calculated, never assumed; the crusher question is a rate question, not a count; and the examples below are editable structures with stated assumptions, not rate cards. The bucket sizing side sits in the L968H bucket selection guide and the L956F bucket options guide, the cost conversion in the cost calculator guide — the formulas transfer to loaders directly; the desk at +254 718 686 967 runs the matching with your fleet's numbers.
| The four inputs | Bucket fill factor, material density, truck capacity and cycle time — the pass count and the feed rate both fall out of these four, honestly measured |
| The two questions | Filling a tipper is a count question — whole, sensible passes; feeding a crusher is a rate question — tonnes per hour sustained within the crusher's appetite |
| The target band | Three to five passes per truck is the usual honest window at the production classes — outside it, either the bucket or the truck is wrong for the other |
| The honesty rule | Every example below is an editable structure with stated assumptions — the site's measured numbers replace them before any real decision |
| Verification date | 2026-11-03 |
The pass formula, in plain steps
- Payload per pass: bucket heaped capacity × bucket fill factor × the material density loading reality of the product, capped by the machine's rated payload — the loader payload per pass is the smallest of those three numbers, never the largest.
- Passes per load: the truck capacity matching step — truck payload ÷ payload per pass, rounded to the nearest whole pass — and if the rounding is uncomfortable, the pairing is wrong.
- Cycle time: the timed reality of dig, swing, travel, dump and return at the site — measured across shifts, not assumed from the gate.
- Trucks served: truck cycle time ÷ loader cycle per truck, telling the fleet how many trucks one loader honestly keeps fed.
The pass matching calculation is arithmetic a spreadsheet does in seconds — the work is in the four inputs, and every one of them is a site measurement wearing a formula's clothes.
Illustrative examples across the size classes
| Class scenario | Assumptions stated | What the example shows |
|---|---|---|
| Compact class, farm or estate tippers | Small bucket, free-flowing material, light trucks | Few passes per small load — the matching question matters less than the travel time between piles |
| Five-tonne class, construction tippers | Mid bucket, mixed material, mid-size trucks | The classic three-to-five-pass window — where the whole-pass rule earns its keep |
| Heavy class, quarry trucks | Large bucket, blasted rock, large trucks | The density cap binding first — payload per pass set by tonnes, not litres, and the pass count discovered from there |
Feeding a crusher: the rate version of the question
The crusher feed rate loader question is pass matching at production scale. The crusher has an appetite — tonnes per hour it processes at its best — and the loader's job is to sustain it without starving or flooding. The matching rows: the crusher's rated appetite against its real behaviour with the site's material; the loader's sustainable rate — payload per pass × passes per hour at the measured cycle; the buffer strategy — a stockpile ahead of the crusher smoothing the loader's inevitable interruptions; and the secondary duties — the face, the stockpiles and the clean-up that share the same machine. Crusher feeding rewards steady passes over heroic ones: the operator who holds the rate beats the operator who spikes it, because crushers forgive starvation better than flooding, and both better than starvation followed by flooding. The SDLG loader production Kenya programmes that master this row run their crushers at the rate that makes the most tonnes per litre — not the rate that makes the most noise.
Cycle time: the multiplier nobody prices
Cycle time wheel loader reality is where matching meets money. Every second of the cycle — digging in, backing, travelling, positioning, dumping, returning — is either production or patience, and the site that times its cycles discovers where the patience lives. The common findings: travel distance set by the face position, fixable by a loader-length decision; queue time at the truck, fixable by the truck count this page's formulas produce; and dig time inflated by a bucket that fights the material, fixable by the sizing guides linked above. Cycle time divides into every pass count, every feed rate and every cost figure on the site — and it improves fastest where it is measured first.
Misuse patterns that corrupt matching
- The assumed fill factor: every bucket full to the heaped mark in the spreadsheet, half full at the face — the passes counted on paper, refunded in queues.
- The density amnesia: volume carried into the calculation, tonnes forgotten — the payload cap discovered at the weighbridge or the overload line.
- The fractional pass: the truck that needs three-and-a-half passes getting three slow ones and an argument — the pairing wrong, not the arithmetic.
- The crusher spiked: heroic passes flooding the hopper between silences — the rate averaged into the crusher's least forgiving hour.
- The untimed cycle: seconds assumed from memory — the cheapest measurement in the industry skipped, the most expensive.
Five checks before the matching is trusted
- The fill factor is observed: the bucket's actual fill in the site's material, not the brochure's heaped capacity.
- The density is named: the product's loose density on the calculation, with the payload cap honoured.
- The trucks are verified: payloads confirmed, the pass count whole and inside the honest window.
- The cycles are timed: loader and truck, measured across shifts, refreshed per material change.
- The examples are labelled: illustrative structures marked as such — measured numbers replace them before any decision.
Working the knowledge with the desk
Send the truck fleet, the material and the crusher's appetite to +254 718 686 967 and the desk runs the matching — passes per truck across the fleet, trucks per loader at the timed cycles, and the crusher feed plan that keeps the rate steady. The method is free; the written quotation carries the real numbers within 24 hours. The sites that pass-match honestly rarely need bigger machines; they need the right passes, the right trucks and the measured cycles — and those three are cheaper than any purchase order ever signed.
Frequently asked questions
1. How many passes should fill a tipper?
A whole, sensible number — usually three to five at the production classes — calculated from payload per pass against the verified truck payload; fractional answers mean the pairing is wrong, not the arithmetic.
2. How do we calculate passes per load?
Bucket capacity × fill factor × material density, capped by rated payload, gives payload per pass; truck payload divided by that, rounded to a whole pass, gives the count.
3. How do we feed a crusher at the right rate?
Sustain the crusher's appetite with steady passes at the measured cycle — payload per pass times passes per hour — buffered by a stockpile ahead, never spiked and never starved.
4. What fill factor should we use?
The observed one for the site's material — free-flowing products fill high, blasted shot low; the brochure's heaped capacity is a ceiling, not an expectation.
5. How many trucks can one loader serve?
Truck cycle time divided by the loader's cycle per truck — the honest count, refreshed whenever material or travel distance changes.
6. Why does cycle time matter so much?
It divides into every pass count, feed rate and cost figure on the site — measured first, it improves fastest, and it is the cheapest measurement the industry offers.
7. Do the examples give us our numbers?
No — they are editable structures with stated assumptions; the site's measured fill factors, densities, payloads and cycles replace them before any real decision.
8. Who runs the matching with our fleet's numbers?
The SDLG desk at +254 718 686 967 — trucks, material and crusher appetite in, passes per truck and feed plan out.
Match your passes to your trucks and crusher
Send your truck fleet, material and crusher appetite — we return the pass matching and feed plan with the written quotation within 24 hours.
Disclaimer: All pass counts, feed rates and examples on this page are illustrative structures with stated assumptions, not production guarantees; real matching replaces every input with the site's measured fill factors, densities, payloads and cycle times. Rated payload figures live on each machine's protected page and official documentation. Figures verified 2026-11-03.
Wheel Loader Pass Matching: How Many Passes Fill Your Tipper or Feed Your Crusher?
Watch — 67 seconds: the complete SDLG range in Kenya
The loader family this pass matching guide serves — every SDLG machine in one film from the Ruai yard.
Video not playing? Download it or watch on YouTube — and for a machine of your own, call +254 718 686 967.
The cheapest production upgrade on a loading site is not a bigger bucket, a newer machine or a faster operator — it is the right number of passes, because every pass too many is a cycle wasted, and every pass too few is a queue forming. This guide explains wheel loader pass matching — the passes to fill tipper loads and the crusher feed rate that decide site production — through the four inputs that decide it: bucket fill factor, material density, truck capacity and cycle time wheel loader realities, with editable example structures across the size classes.
Quick answers if you are matching now: the passes per load are calculated, never assumed; the crusher question is a rate question, not a count; and the examples below are editable structures with stated assumptions, not rate cards. The bucket sizing side sits in the L968H bucket selection guide and the L956F bucket options guide, the cost conversion in the cost calculator guide — the formulas transfer to loaders directly; the desk at +254 718 686 967 runs the matching with your fleet's numbers.
| The four inputs | Bucket fill factor, material density, truck capacity and cycle time — the pass count and the feed rate both fall out of these four, honestly measured |
| The two questions | Filling a tipper is a count question — whole, sensible passes; feeding a crusher is a rate question — tonnes per hour sustained within the crusher's appetite |
| The target band | Three to five passes per truck is the usual honest window at the production classes — outside it, either the bucket or the truck is wrong for the other |
| The honesty rule | Every example below is an editable structure with stated assumptions — the site's measured numbers replace them before any real decision |
| Verification date | 2026-11-03 |
The pass formula, in plain steps
- Payload per pass: bucket heaped capacity × bucket fill factor × the material density loading reality of the product, capped by the machine's rated payload — the loader payload per pass is the smallest of those three numbers, never the largest.
- Passes per load: the truck capacity matching step — truck payload ÷ payload per pass, rounded to the nearest whole pass — and if the rounding is uncomfortable, the pairing is wrong.
- Cycle time: the timed reality of dig, swing, travel, dump and return at the site — measured across shifts, not assumed from the gate.
- Trucks served: truck cycle time ÷ loader cycle per truck, telling the fleet how many trucks one loader honestly keeps fed.
The pass matching calculation is arithmetic a spreadsheet does in seconds — the work is in the four inputs, and every one of them is a site measurement wearing a formula's clothes.
Illustrative examples across the size classes
| Class scenario | Assumptions stated | What the example shows |
|---|---|---|
| Compact class, farm or estate tippers | Small bucket, free-flowing material, light trucks | Few passes per small load — the matching question matters less than the travel time between piles |
| Five-tonne class, construction tippers | Mid bucket, mixed material, mid-size trucks | The classic three-to-five-pass window — where the whole-pass rule earns its keep |
| Heavy class, quarry trucks | Large bucket, blasted rock, large trucks | The density cap binding first — payload per pass set by tonnes, not litres, and the pass count discovered from there |
Feeding a crusher: the rate version of the question
The crusher feed rate loader question is pass matching at production scale. The crusher has an appetite — tonnes per hour it processes at its best — and the loader's job is to sustain it without starving or flooding. The matching rows: the crusher's rated appetite against its real behaviour with the site's material; the loader's sustainable rate — payload per pass × passes per hour at the measured cycle; the buffer strategy — a stockpile ahead of the crusher smoothing the loader's inevitable interruptions; and the secondary duties — the face, the stockpiles and the clean-up that share the same machine. Crusher feeding rewards steady passes over heroic ones: the operator who holds the rate beats the operator who spikes it, because crushers forgive starvation better than flooding, and both better than starvation followed by flooding. The SDLG loader production Kenya programmes that master this row run their crushers at the rate that makes the most tonnes per litre — not the rate that makes the most noise.
Cycle time: the multiplier nobody prices
Cycle time wheel loader reality is where matching meets money. Every second of the cycle — digging in, backing, travelling, positioning, dumping, returning — is either production or patience, and the site that times its cycles discovers where the patience lives. The common findings: travel distance set by the face position, fixable by a loader-length decision; queue time at the truck, fixable by the truck count this page's formulas produce; and dig time inflated by a bucket that fights the material, fixable by the sizing guides linked above. Cycle time divides into every pass count, every feed rate and every cost figure on the site — and it improves fastest where it is measured first.
Misuse patterns that corrupt matching
- The assumed fill factor: every bucket full to the heaped mark in the spreadsheet, half full at the face — the passes counted on paper, refunded in queues.
- The density amnesia: volume carried into the calculation, tonnes forgotten — the payload cap discovered at the weighbridge or the overload line.
- The fractional pass: the truck that needs three-and-a-half passes getting three slow ones and an argument — the pairing wrong, not the arithmetic.
- The crusher spiked: heroic passes flooding the hopper between silences — the rate averaged into the crusher's least forgiving hour.
- The untimed cycle: seconds assumed from memory — the cheapest measurement in the industry skipped, the most expensive.
Five checks before the matching is trusted
- The fill factor is observed: the bucket's actual fill in the site's material, not the brochure's heaped capacity.
- The density is named: the product's loose density on the calculation, with the payload cap honoured.
- The trucks are verified: payloads confirmed, the pass count whole and inside the honest window.
- The cycles are timed: loader and truck, measured across shifts, refreshed per material change.
- The examples are labelled: illustrative structures marked as such — measured numbers replace them before any decision.
Working the knowledge with the desk
Send the truck fleet, the material and the crusher's appetite to +254 718 686 967 and the desk runs the matching — passes per truck across the fleet, trucks per loader at the timed cycles, and the crusher feed plan that keeps the rate steady. The method is free; the written quotation carries the real numbers within 24 hours. The sites that pass-match honestly rarely need bigger machines; they need the right passes, the right trucks and the measured cycles — and those three are cheaper than any purchase order ever signed.
Frequently asked questions
1. How many passes should fill a tipper?
A whole, sensible number — usually three to five at the production classes — calculated from payload per pass against the verified truck payload; fractional answers mean the pairing is wrong, not the arithmetic.
2. How do we calculate passes per load?
Bucket capacity × fill factor × material density, capped by rated payload, gives payload per pass; truck payload divided by that, rounded to a whole pass, gives the count.
3. How do we feed a crusher at the right rate?
Sustain the crusher's appetite with steady passes at the measured cycle — payload per pass times passes per hour — buffered by a stockpile ahead, never spiked and never starved.
4. What fill factor should we use?
The observed one for the site's material — free-flowing products fill high, blasted shot low; the brochure's heaped capacity is a ceiling, not an expectation.
5. How many trucks can one loader serve?
Truck cycle time divided by the loader's cycle per truck — the honest count, refreshed whenever material or travel distance changes.
6. Why does cycle time matter so much?
It divides into every pass count, feed rate and cost figure on the site — measured first, it improves fastest, and it is the cheapest measurement the industry offers.
7. Do the examples give us our numbers?
No — they are editable structures with stated assumptions; the site's measured fill factors, densities, payloads and cycles replace them before any real decision.
8. Who runs the matching with our fleet's numbers?
The SDLG desk at +254 718 686 967 — trucks, material and crusher appetite in, passes per truck and feed plan out.
Match your passes to your trucks and crusher
Send your truck fleet, material and crusher appetite — we return the pass matching and feed plan with the written quotation within 24 hours.
Disclaimer: All pass counts, feed rates and examples on this page are illustrative structures with stated assumptions, not production guarantees; real matching replaces every input with the site's measured fill factors, densities, payloads and cycle times. Rated payload figures live on each machine's protected page and official documentation. Figures verified 2026-11-03.
