The SK.Y carries its crushing force on a single large hydraulic cylinder underneath the main shaft. That single actuator adjusts the discharge setting, releases on an uncrushable lump, and clears a stalled cavity — which is why the SK.Y has fewer hydraulic lines, fewer seals and fewer places to leak than a multi-cylinder machine.
For African and Southeast Asian plants where the crusher is fed by a small operating team and the nearest factory service visit is a flight away, that simplicity is not a compromise — it is correct engineering. The trade-off is that cavity flexibility is narrower than the SK.D, so the SK.Y suits coarse and medium secondary duty rather than precision tertiary sand work.
Typical duty: secondary cone behind a jaw on granite and basalt lines from 200 to 800 t/h, and coarse-stage tertiary work where the target product is 0–40 mm rather than 0–20 mm.
Product and workshop photographs from our own production lines — Hangzhou, Weihai and Wuhu.
Design & working principle
- Single-cylinder hydraulic system — one actuator for setting, protection and clearing: fewer seals, simpler fault-finding, and spares that a site mechanic can change.
- Large eccentric throw — high throughput per pass on coarse secondary duty without over-compressing the product.
- Hydraulic setting adjustment under load — change product size without emptying the cavity first.
- Spiral bevel gear drive — hardened and lapped as a pair, running in an oil bath with monitored temperature.
- Overload release and automatic reset — tramp metal passes, the machine resets, production resumes without a full cavity clean-out.
Parameter table
Published as a real HTML table, not a PDF or an image — so it can be read, copied and indexed. Figures are from our own product documentation; the datasheet and GA drawing follow on request.
| Model | Max feed size (mm) | Discharge setting (mm) | Capacity, open circuit (t/h) | Main motor (kW) | Weight (t) |
|---|---|---|---|---|---|
| SK.Y.1200 | 210 | 20–40 | 200–450 | 220 | 18 |
| SK.Y.1500 | 230 | 25–40 | 350–700 | 315 | 24 |
| SK.Y.1500.C | 280 | 40–65 | 450–810 | 315 | 28 |
| SK.Y.1800.S | 250 | 25–50 | 350–680 | 355 | 31 |
| SK.Y.1800.Z | 250 | 40–80 | 480–910 | 355 | 31 |
| SK.Y.1800.C | 350 | 65–100 | 600–1,150 | 355 | 33 |
Model suffixes denote cavity type: .S medium, .Z intermediate, .C coarse. Capacities are open-circuit figures — closed-circuit duty runs lower.
Configuration & options
Cavity
Medium (.S), intermediate (.Z) and coarse (.C) cavities on the 1500 and 1800 platforms.
Automation
Control cabinet with hydraulic pressure and oil-temperature display; optional automatic setting regulation.
Lubrication & cooling
Air-cooled standard; water-cooled for sites above 40 °C ambient.
Drive
Motor and coupling sized to duty; soft-start available for diesel-genset sites.
Wear liners
Mn13Cr2 standard bowl and mantle liners; high-chrome options for abrasive basalt and river gravel.
How to choose the right model
- Choose the SK.Y when the duty is coarse-to-medium secondary and the priority is maintainability. Choose the SK.D when you need fine discharge control or frequent cavity changes.
- Size by the discharge setting you actually need, then check the capacity column — the same model can differ by a factor of two between a coarse and a tight setting.
- If your plant runs on diesel generation, tell us early: motor starting current is the constraint that decides whether the SK.Y or the SK.D is the cheaper machine to install.
Delivery & service commitments
| Item | Commitment |
|---|---|
| Standard machine lead time | 60 days from order confirmation |
| Annual production capacity / monthly shipments | 1,000 units per year · 100 units per month (all ranges) |
| Spare parts supply | Within 2 months worst case; typically far faster for models in current production |
| Engineer attendance on site | Within 10 days of the requirement being agreed, for export markets |
| Remote support | Response within one working day; included, not charged |
| Warranty | Terms stated in the contract in the same words published on this site |
| Installation & commissioning | Guidance and supervision by our engineers, through to acceptance at rated capacity |
| Buyer provides | Site civil works, electrical installation and site access — drawings and answers supplied |
We supply the machines, the drawings, the commissioning support and the parts. We do not operate your plant after handover.
Common questions
Is a single-cylinder machine less capable than a multi-cylinder one?
Not in the duty it is designed for. It has a narrower range of cavity options and slightly less precise discharge control. On coarse secondary duty at high tonnage it is frequently the more productive and definitely the cheaper machine to own. Anyone telling you otherwise is usually selling what they have in stock.
How often does the hydraulic cylinder need attention?
The cylinder itself is a low-wear item. What needs watching is the hydraulic oil — we recommend a scheduled oil analysis, and on hot sites an annual seal inspection. Both are in the maintenance manual we hand over at commissioning.
Can the SK.Y run as a tertiary machine for sand?
It can produce a manufactured-sand feed, and the SK.Y.1200 is used as a cone sand maker with a specialised setup (see the manufactured-sand solution page). For a dedicated concrete-grade sand line we normally specify a VSI as the final stage, because gradation and particle shape are better controlled.