Choosing Compact Mobile Equipment for Virgin Stone Processing

Virgin stone processing — taking natural rock that has been extracted from a quarry, pit, or local rock source and reducing it into usable construction aggregate, road base, drainage stone, or specialty stone product — happens across a wide range of operational scales and rock conditions. The right equipment depends on two practical questions: how hard and abrasive is your rock, and how much of it do you need to process.

Komplet America does not extract or quarry rock; we process material that has already been extracted. Within that role, Komplet’s compact mobile equipment lineup — four jaw crushers (K-JC 503, K-JC 604, K-JC 704 PLUS, K-JC 805), the K-IC 70 compact impact crusher, the Kompatto vibrating scalping screeners, and the K-TC 460 tracked mobile conveyor — covers a meaningful portion of virgin stone processing work, from contractor-scale rock pits and small commercial stone yards through the upper end of compact-mobile capacity at 160 US tph.

Industrial-scale virgin stone work — sustained 500+ US tph fixed-plant operations, million-ton-per-year aggregate production, multi-shift continuous mining — is the territory of fixed-plant industrial equipment Komplet does not sell. For operators at that scale, fixed-plant equipment from manufacturers focused on industrial mining and aggregate is the right answer. Below, we walk through how to match Komplet equipment to the virgin stone work it actually fits.

The Two Selection Dimensions: Rock Hardness and Throughput

Equipment selection for virgin stone is fundamentally a two-dimensional decision. Both dimensions matter, and both have to be honest:

Rock Hardness and Abrasivity (PSI Tolerance)

Virgin stone covers a wide range of rock types and physical properties. Compressive strength (commonly expressed in PSI), Mohs hardness, and abrasivity index are the practical measures that determine how the rock behaves in a crusher and how fast wear parts consume:

• Softer, lower-PSI virgin stone — sandstone, soft limestone, dolomite, weathered or partially decomposed rock. Lower compressive strength, lower abrasivity, longer wear-part service life.
• Mid-range virgin stone — most commercial limestone, dolomitic limestone, denser sandstones, and similar mid-PSI material. Reasonable wear-part service life with disciplined operating practice.
• Hard, abrasive virgin stone — granite, basalt, traprock, hard limestone, quartzite. High compressive strength, high abrasivity, accelerated wear-part consumption — favors heavier-duty primary crushing.

Komplet jaw crushers can handle the full spectrum within their throughput tolerance, but harder, more abrasive rock pushes wear-part consumption and machine duty cycle harder than softer rock does. The bigger and heavier the machine, the more headroom it has on hard, abrasive feed.

Throughput and Annual Volume

Match the crusher’s peak production rate to the operation’s actual annual output, accounting for realistic operating hours per year. As a starting point for sizing the Komplet jaw lineup against virgin stone production volume:

• Under 5,000 tons annually → K-JC 503 or K-JC 604, depending on rock hardness
• 5,000 to 30,000 tons annually → K-JC 604 or K-JC 704 PLUS, depending on rock hardness
• 30,000 to 80,000 tons annually → K-JC 704 PLUS or K-JC 805, depending on rock hardness
• 80,000+ tons annually → K-JC 805 (the largest jaw crusher Komplet makes)

Apply 30 to 50 percent headroom for peak demand and growth. The same annual tonnage looks different at different rock hardnesses — 30,000 tons of soft limestone is meaningfully easier on the equipment than 30,000 tons of hard granite. When in doubt, size up by one machine, particularly on harder rock.

The Komplet Crusher Lineup for Virgin Stone Work

All four Komplet jaw crushers can process virgin stone within their throughput and PSI tolerance. The right choice depends on which combination of rock hardness and annual volume your operation actually runs.

K-JC 503 Mini Jaw Crusher — $108,695.73

• Engine: 25 hp Tier 4F diesel
• Production: up to 34 US tph
• Jaw opening: 19″ × 12″ (max feed ~9-1/2″ per the 20 percent rule)
• Output size: 3/4″ to 3-1/4″
• Operating weight: 7,496 lb
• Magnetic separator and dust suppression: standard
• Best fit for virgin stone: small-batch and intermittent virgin stone work on softer to mid-range rock; contractor-scale rock pits, specialty hardscape stone, decorative aggregate at modest volumes, tight-access stone-yard operations. Not the right tool for sustained primary feed of hard, abrasive virgin stone.

K-JC 604 Mobile Jaw Crusher — $205,030.80

• Engine: 55 hp Tier 4F diesel
• Production: up to 55 US tph
• Jaw opening: 23″ × 16″ (max feed ~12-3/4″ per the 20 percent rule)
• Output size: 3/4″ to 3-1/4″
• Operating weight: 19,400 lb
• Magnetic separator: standard
• Best fit for virgin stone: small to mid contractor-scale virgin stone processing on softer to mid-range rock; regional stone yards, contractor-owned rock pits, mid-volume specialty stone production. Capable of harder rock at appropriate utilization, with shorter wear-part service life.

K-JC 704 PLUS Portable Jaw Crusher — $241,255.95

• Engine: 74 hp Tier 4F Deutz diesel
• Production: up to 90 US tph
• Jaw opening: 27″ × 16″ (max feed ~12-3/4″ per the 20 percent rule)
• Output size: 3/4″ to 3-1/4″
• Operating weight: 26,455 lb
• Magnetic separator: standard
• Komplet Connect remote monitoring: standard
• Best fit for virgin stone: Komplet America’s best-selling crusher — a workhorse for broader contractor-scale virgin stone work across mixed rock hardness within its PSI tolerance. Mid-volume virgin stone operations, multi-county stone yards, mid-tier commercial limestone or hard-rock work at the lower end of throughput.

K-JC 805 Mobile Jaw Crusher — $454,366.25

• Engine: 130 hp Tier 4F diesel
• Production: up to 160 US tph
• Jaw opening: 31″ × 21″ (max feed ~16-3/4″ per the 20 percent rule)
• Output size: approximately 1.2″ to 4.7″
• Operating weight: 49,600 lb
• Magnetic separator and Komplet Connect remote monitoring: standard
• Classification: semi-pro
• Best fit for virgin stone: the largest jaw crusher in the Komplet lineup; the right primary crusher for harder, more abrasive virgin stone (granite, basalt, hard limestone) and for higher sustained throughput within compact-mobile capacity. Larger small commercial rock pits, multi-county aggregate suppliers, and operations at the upper end of compact-mobile virgin stone work.

Magnetic separation is standard on every Komplet jaw crusher (the K-JC 503’s published price reflects the unit plus magnetic attachment together). Wireless remote control and EPA Tier 4 Final emissions are standard across the lineup. Hydraulic CSS adjustment for output size selection is standard. Pricing is subject to change based on dealer location, configuration, and availability — confirm with Komplet America at 908-369-3340 or your authorized Komplet dealer.

Optional Secondary: K-IC 70 for Spec Cubical Aggregate

Some virgin stone operations supply spec aggregate to hot-mix asphalt plants or concrete batch plants, where the end use requires cubical particle shape rather than the more elongated particles a typical jaw crusher produces. For those operations, Komplet’s K-IC 70 compact impact crusher can be deployed as optional secondary reduction behind a Komplet jaw crusher. Verified specifications:

• Engine: 100 hp Tier 4F diesel
• Production: up to 90 US tph
• Inlet: 25″ × 20″
• Output size: 3/4″ to 3-1/4″
• Operating weight: 28,600 lb
• Magnetic separator and dust suppression: standard
• Verified pricing: $285,948.00

The K-IC 70 uses blow bars rather than jaw plates as the primary consumable wear part. Impact crushers wear faster on highly abrasive rock than jaw crushers, so the K-IC 70 is best deployed as secondary reduction — letting the jaw crusher take the abrasive primary work and the impact crusher take a controlled, smaller-feed secondary stage that produces premium cubical aggregate ideal for RAP reduction and DOT-spec material. The K-IC 70 can also serve as primary on lower-abrasivity rock where its wear-part economics work in favor of cubical output from a single stage.

If your virgin stone is highly abrasive (granite, basalt, hard limestone) and you do not need cubical output, the K-IC 70 is generally not the right addition — its wear-part service life on highly abrasive primary feed will be substantially shorter than the jaw crusher’s. Match the impact crusher to applications where its cubical-shape advantage actually matters.

Scalping and Screening: The Kompatto Lineup

Virgin stone crushing rarely runs alone. The complete operation typically pairs the primary crusher with a vibrating scalping screener that separates crusher output into spec cuts in a single pass. Standard Komplet pairings against the jaw lineup:

• Kompatto 221 — up to 90 US tph, 25 hp Tier 4F diesel, two-deck 7′ × 3.5′ screen, ~7,275 lb. Komplet’s smallest self-propelled scalper. Pairs naturally with the K-JC 503 or K-JC 604. Approximately $104,935.48.
• Kompatto 5030 — up to 280 US tph, 55 hp Tier 4F diesel, 8′ × 3’2″ upper / 7′ × 3’2″ lower decks, ~26,455 lb. Komplet America’s best-selling screener. Pairs naturally with the K-JC 604, K-JC 704 PLUS, and K-JC 805. Approximately $209,061.45.
• Kompatto 124 — up to 350 tph, 75 hp Tier 4F diesel, 11.8′ × 3.7′ upper / 10.8′ × 3.7′ lower decks, ~37,038 lb. The largest mobile scalping screen in the Komplet lineup; for operations approaching the upper end of K-JC 805 throughput. Approximately $268,070.40.

Screener throughput should match or exceed crusher throughput so the screen does not become the bottleneck. Two-deck screening separates crusher output into multiple cuts (oversize, mid-fraction, fines); oversize returns to the crusher for additional reduction, and spec sizes go to dedicated stockpiles.

Conveying and Stockpile Management: K-TC 460

Komplet’s K-TC 460 tracked mobile conveyor extends reach from the screener and builds clean spec stockpiles. The K-TC 460 is tracked, self-propelled, and operated alongside the rest of the Komplet spread — it walks itself into position and integrates with any of the jaw crusher / Kompatto screener configurations. Komplet does not sell apron feeders, vibrating grizzly feeders, or other industrial-scale feeding and conveying equipment; for compact-mobile virgin stone operations, the K-TC 460 covers the conveying and stockpile-management requirement.

Standard Komplet Virgin Stone Spreads

Common Komplet virgin stone configurations match crusher size to scalping screen size and add the K-TC 460 for stockpile management:

• K-JC 503 → Kompatto 221 → K-TC 460 — small-batch virgin stone on softer to mid-range rock at modest annual volumes
• K-JC 604 → Kompatto 221 or Kompatto 5030 → K-TC 460 — small to mid contractor-scale virgin stone, mid-volume specialty stone production
• K-JC 704 PLUS → Kompatto 5030 → K-TC 460 — the most common compact-mobile virgin stone spread; broader contractor-scale virgin stone work across mixed rock hardness
• K-JC 805 → Kompatto 5030 or Kompatto 124 → K-TC 460 — the heavy end of compact-mobile virgin stone work; harder rock and higher sustained throughput within the 160 US tph envelope
• Any jaw → K-IC 70 → Kompatto 5030 → K-TC 460 — with the K-IC 70 added as optional secondary for spec cubical aggregate output (asphalt plant feed, concrete batch plant aggregate)

Honest Scope: Virgin Stone Work Komplet Does Not Cover

Compact mobile equipment fits a meaningful portion of virgin stone work, but not all of it. The following profiles are outside Komplet America’s scope:

• Industrial-scale fixed-plant operations — 500+ US tph sustained throughput, multi-million-ton-per-year volumes, multi-shift continuous production. Komplet’s jaw lineup tops out at the K-JC 805 (up to 160 US tph). Operations of this scale require fixed-plant primary gyratory crushers, secondary cone crushers, and vertical-shaft impactors at throughputs and design profiles compact mobile equipment is not engineered to deliver.
• Heavily abrasive, sustained primary feed at high tonnage — operations sustaining hundreds of tph on hard granite, basalt, or quartzite as the primary business need fixed-plant equipment with the wear-part economics and chamber design that scale of duty cycle requires. Compact mobile crushers can run that material, but not as the sustained primary basis of a high-volume operation.
• Specialty industrial mineral and ore extraction — hard ore extraction, specialty mineral processing for industrial chemicals, and continuous mining operations require purpose-built mining equipment outside the compact-mobile category.
• Manufactured sand at industrial scale — large-scale specialty sand-making plants are outside Komplet’s category. The K-IC 70 produces a cubical aggregate well suited to many spec applications, but industrial manufactured-sand operations require dedicated VSI plants and supporting infrastructure.
• Equipment categories Komplet does not sell — cone crushers, gyratory crushers, vertical-shaft impactors (VSI), grinding mills (ball mills, rod mills, vertical mills), apron feeders, vibrating grizzly feeders, density separators, optical sorters, and standalone dust-collection systems (cyclone collectors, baghouse filters, wet scrubbers). These categories belong to fixed-plant industrial equipment manufacturers.

If your operation falls into any of these profiles, the right answer is fixed-plant industrial equipment from manufacturers focused on that category — not Komplet. We would rather direct an operator to the right equipment than oversell a compact mobile machine into a job it is not engineered for.

Selection Criteria for Virgin Stone Equipment

Match the Crusher to the Rock and the Tonnage

Hard, abrasive virgin stone — granite, basalt, traprock, hard limestone — favors heavier-duty primary crushing. The K-JC 805 has the most headroom on harder rock; the K-JC 704 PLUS is capable on mixed-hardness work within its throughput tolerance; the K-JC 604 and K-JC 503 fit softer to mid-range rock at lower throughputs. Lower-abrasivity rock — soft limestone, dolomite, sandstone — runs comfortably across more of the lineup, with the smaller machines economical for smaller-volume operations. Match the crusher to both the rock and the volume; under-sizing on hard rock burns through wear parts and machine life faster than the equipment is engineered for.

Match Output Spec to End Market

If your end market is road base, drainage, fill, or similar applications where particle shape is not critical, jaw crusher output running directly to a screener delivers what the customer needs. If your end market requires cubical particle shape (hot-mix asphalt plant feed, concrete batch plant aggregate), add the K-IC 70 as optional secondary. Match the equipment to the spec rather than producing one shape and trying to sell it across markets that prefer different geometries.

Match Mobility to the Operating Profile

All current Komplet equipment is tracked, self-propelled, and operated by wireless remote — there is no fixed-plant configuration in the Komplet lineup. For virgin stone operations that move between faces or pits, follow active extraction, or set up at temporary processing locations, the mobility advantages typically outweigh the throughput tradeoff against fixed-plant alternatives. For operations running fixed-plant continuous production at industrial scale, mobility is not the right design criterion — those operations belong on fixed plants.

Regulatory and Environmental Compliance

OSHA Silica Compliance

Virgin stone crushing on silica-bearing rock (granite, sandstone, hard limestone) generates respirable crystalline silica dust at the source unless engineering controls are in place. OSHA’s silica standards (29 CFR 1926.1153 for construction; 29 CFR 1910.1053 for general industry, which typically covers stone production operations) set a Permissible Exposure Limit of 50 µg/m³ as an 8-hour time-weighted average and an Action Level of 25 µg/m³. Factory-integrated water-spray dust suppression is standard on the K-JC 503 and K-IC 70, and is available as an option on the K-JC 604, K-JC 704 PLUS, and K-JC 805. Specifying dust suppression at order on whichever crusher fits your scale is a meaningful piece of OSHA Table 1 wet-method engineering controls. Confirm exact configuration with your authorized Komplet dealer.

EPA Tier 4 Final Emissions

All current Komplet equipment sold in the United States meets EPA Tier 4 Final emissions standards for non-road diesel engines — required for new-equipment sale in the U.S. and meaningful for stone operations near residential areas, on federally funded projects, or in jurisdictions with stricter local emissions requirements. Diesel exhaust fluid (DEF) infrastructure is required, but DEF is widely available.

State and Local Permitting

Stone processing operations are typically subject to state and local permitting requirements covering operating hours, dust and noise emissions, water management, reclamation plans, and similar conditions. Equipment selection should align with the operation’s permit conditions. Consult your state environmental and mining/quarrying regulators for specific permit requirements; Komplet America does not provide stone permitting consulting.

Frequently Asked Questions

Can the K-JC 503 or K-JC 604 process virgin stone?

Yes, within their PSI tolerance and throughput envelope. The K-JC 503 fits small-batch and intermittent virgin stone work on softer to mid-range rock at modest annual volumes — contractor-scale rock pits, specialty hardscape stone, decorative aggregate. The K-JC 604 fits small to mid contractor-scale virgin stone on softer to mid-range rock at moderate volumes. Both can handle harder rock at appropriate utilization, with shorter wear-part service life — but neither is the right tool for sustained primary feed of hard, abrasive virgin stone at high tonnage. Match the machine to both the rock and the volume.

What is the right Komplet crusher for granite or basalt?

The K-JC 805 has the most headroom on hard, abrasive virgin stone — granite, basalt, traprock, hard limestone — at compact-mobile capacity, with the largest jaw opening and the heaviest-duty design in the lineup. The K-JC 704 PLUS is capable on harder rock within its throughput tolerance and at appropriate utilization, with shorter wear-part service life than the K-JC 805 on the same feed. For sustained high-volume primary feed of granite or basalt as the operational basis of a high-tonnage business, fixed-plant industrial equipment outside Komplet’s category is typically the right answer.

What if my virgin stone operation needs more than 160 US tph?

Then Komplet is not the right manufacturer for your primary crusher. Operations needing sustained throughput above 160 US tph should be evaluating fixed-plant industrial mining and aggregate equipment from manufacturers focused on that category — large gyratory primary crushers, cone crushers for secondary and tertiary reduction, and supporting infrastructure at industrial scale. We would rather tell you that than oversell the K-JC 805 into a job it is not engineered for.

Do I need the K-IC 70 for my virgin stone operation?

Only if your end customers require cubical particle shape. Hot-mix asphalt plants and concrete batch plants prefer cubical aggregate because it locks and bonds better than the more elongated particles a jaw crusher produces. If your operation supplies aggregate for spec asphalt or concrete batch plant feed, the K-IC 70 can be deployed as secondary reduction behind a Komplet jaw crusher to produce cubical output. If your virgin stone produces aggregate for road base, drainage, fill, or other applications where particle shape is not critical, you typically do not need the K-IC 70 — jaw crusher output running directly to a screener delivers the right product.

Does Komplet sell cone crushers, grinding mills, or VSI machines?

No. Komplet’s crusher lineup consists of jaw crushers (K-JC 503, K-JC 604, K-JC 704 PLUS, K-JC 805) and a compact impact crusher (K-IC 70). Cone crushers, gyratory crushers, vertical-shaft impactors (VSI), and grinding mills (ball mills, rod mills, vertical mills) are different equipment categories belonging to fixed-plant industrial manufacturers. Operations that need that equipment should be evaluating manufacturers focused on industrial mining and aggregate fixed-plant equipment.

Does Komplet sell standalone dust collection systems?

No. Komplet does not sell cyclone collectors, baghouse filters, or wet scrubbers. Komplet equipment includes factory-integrated water-spray dust suppression — standard on the K-JC 503 and K-IC 70, available as an option on the K-JC 604, K-JC 704 PLUS, and K-JC 805. For operations requiring extensive dust-collection infrastructure beyond on-machine water spray, that equipment comes from dedicated dust-collection manufacturers, not from Komplet.

Are Komplet crushers fixed-plant or mobile?

All current Komplet crushing equipment is tracked, self-propelled, and operated by wireless remote. There is no fixed-plant or stationary configuration in the Komplet lineup. If your operation requires a fixed-plant setup, you should be evaluating equipment from manufacturers focused on industrial-mining fixed plants — not Komplet.

What warranty applies to Komplet crushers?

All new Komplet equipment comes with a 1-year / 1,000-hour warranty (whichever is earlier). Komplet America stocks parts in New Jersey and ships to wherever the equipment is operating. Confirm warranty terms and pre-owned equipment warranty options with your authorized Komplet dealer or with Komplet America at 908-369-3340.

Final Thoughts

Virgin stone processing equipment selection comes down to the rock and the volume. Komplet America’s compact mobile lineup covers a meaningful portion of the work — the K-JC 503 and K-JC 604 for smaller-volume operations on softer to mid-range rock, the K-JC 704 PLUS as the workhorse for broader contractor-scale virgin stone, the K-JC 805 for harder rock and higher sustained throughput, the K-IC 70 as optional secondary for spec cubical aggregate, the Kompatto scalping screeners for sizing, and the K-TC 460 tracked mobile conveyor for stockpile management. Match the crusher to both the rock and the tonnage, and the equipment delivers the productive service life it is engineered for.

Industrial-scale virgin stone work — sustained 500+ US tph fixed-plant operations, million-ton-per-year aggregate production, heavily abrasive primary feed at high tonnage as the operational basis of the business — needs fixed-plant equipment from manufacturers focused on that category, not compact mobile equipment. Be honest about the scale of your operation before specifying equipment.

Browse the full Komplet America compact crusher lineup, explore screener and conveyor pairings, review Komplet Capital financing options, check certified pre-owned availability, or contact Komplet America directly for application-specific guidance on virgin stone equipment selection — including which Komplet crusher fits your specific rock type and annual volume.

Ready to Spec Your Virgin Stone Equipment?

• Call Komplet America at 908-369-3340 to discuss your rock type, annual volume, and operating profile — we will help you size honestly to the K-JC model that actually fits
• Email [email protected] for spec sheets and stone-processing application sizing support
• Visit our crushing equipment lineup and certified pre-owned inventory for current availability
• Explore Komplet Capital financing — 100% financing, 24-hour approval, multi-year terms, and our 1-year / 1,000-hour factory warranty
• Find your local Komplet dealer for rental availability

Never enough.

Disclaimer: Equipment prices are subject to change based on dealer location, availability, and any additional features or customizations. Prices do not include taxes, shipping, or installation fees, which may apply depending on your region. Contact Komplet America at 908-369-3340 or visit kompletamerica.com for current pricing.

Disclaimer: Any production rate, utilization, fuel-economy, wear-part service life, or capital savings figures shown above are illustrative examples only. Actual results depend on rock type, hardness, abrasivity, jobsite conditions, operator skill, equipment configuration, local hauling and material costs, financing terms, regional regulatory requirements, and operational practices. Komplet America makes no guarantee of specific operational or financial returns. Customers should perform their own analysis based on their specific stone-processing conditions before making purchase decisions.

Disclaimer: All operating, maintenance, feed-size, jaw setting, wear-part, and service guidance in this article is general in nature. The 20 percent maximum feed rule and the per-model feed sizes shown are general operating guidelines, not absolute equipment limits — actual feed tolerance depends on material shape, hardness, embedded reinforcement, and operator practice. Always refer to the official Komplet operator’s manual for the specific machine model and serial number, and follow OEM intervals and procedures. For warranty-protected work, contact Komplet America at 908-369-3340 or your authorized Komplet dealer. Improper service or non-OEM parts may void warranty coverage and create safety hazards. Transport, hauling, and permitting requirements vary by jurisdiction and equipment configuration — confirm with your transport provider before scheduling.