PY Spring
Cone Crusher
Factory-direct spring cone crushers for granite, basalt, iron ore, and other hard-rock secondary or tertiary crushing. PYB, PYZ, and PYD chamber types cover 12 to 640 t/h with adjustable CSS and spring overload protection.
- Best for granite, basalt, iron ore, and other abrasive feed after a jaw crusher
- Choose PYB for secondary duty, PYZ for bridge duty, and PYD for 3-15 mm fine crushing
- Popular buying range: PYB-900 to PYB-1750 for 50-480 t/h quarry and mining lines
3
Chamber Types
5
Cone Sizes
640 t/h
Max Capacity
Good fit to keep in mind
If your plant is breaking abrasive hard rock and impact wear cost looks ugly, spring cone is usually the safer shortlist. If your material is mostly limestone and shape is the main goal, compare PF before you commit to cone.
How a Spring Cone Crusher Works
The cone crusher uses an eccentric gyratory motion to continuously squeeze material between a rotating mantle and a stationary bowl liner — producing a high reduction ratio with consistent, well-shaped output.
01
Feed
Pre-crushed material (typically from a jaw crusher) is top-fed into the crushing chamber. Feed size must not exceed the model's rated maximum.
02
Gyrate
The eccentric bushing causes the mainshaft to precess in a gyratory orbit. The mantle continuously advances toward and retreats from the bowl liner around its full circumference.
03
Squeeze
Material is nipped between the mantle and bowl liner. As it falls lower in the chamber it is squeezed progressively tighter until it is smaller than the CSS.
04
Discharge
Crushed product falls through the CSS gap at the bottom of the chamber and exits. CSS is adjustable while running by rotating the adjustment ring.
Wider, deeper chamber designed for secondary crushing. Accepts up to 300 mm feed and produces 12–60 mm output. Best first stage after a jaw crusher.
Intermediate chamber profile for secondary/fine crushing. Feed ≤230 mm, CSS 5–30 mm. Bridges between PYB secondary and PYD fine crushing.
Short, tight chamber for fine/tertiary crushing. Feed ≤100 mm, CSS 3–15 mm. Produces road chip and well-shaped fine aggregate.
Standard Chamber — Secondary Crushing
5 cone sizes from PYB-600 to PYB-2200. Feed up to 300 mm, CSS 12–60 mm.
Medium Chamber — Secondary / Fine Crushing
Feed ≤230 mm, CSS 5–30 mm. Bridges PYB secondary and PYD fine stages.
Short-Head Chamber — Fine / Tertiary Crushing
Feed ≤100 mm, CSS 3–15 mm. Produces road chip and shaped fine aggregate down to 3 mm.
| Model | Max Feed | CSS Range | Capacity | Motor Power | Weight | Get Quote |
|---|---|---|---|---|---|---|
| PYD-900 | 35 mm | 3–13 mm | 15–50 t/h | 55 kW | 11.2 t | Quote |
| PYD-1200 | 50 mm | 3–15 mm | 18–105 t/h | 110 kW | 25.3 t | Quote |
| PYD-1750 | 90 mm | 5–15 mm | 75–230 t/h | 160 kW | 50.3 t | Quote |
| PYD-2200 | 100 mm | 5–15 mm | 120–340 t/h | 260 kW | 80 t | Quote |
* All capacity figures for medium-hard limestone. Hard abrasive rock reduces capacity by 15–25%. CSS = Closed Side Setting.
Typical Chamber and Model Shortlists
Buyers usually shortlist by stage first, not by cone diameter alone. Start with the chamber family that matches your duty, then confirm size from the tables.
12-90 t/h secondary crushing
PYB-600 / PYB-900
Small granite or basalt lines after PE-400×600 to PE-600×900 jaw crushers.
Best when buyers need a lower-capex hard-rock secondary stage and 12-50 mm product.
110-480 t/h mainline quarry or mining duty
PYB-1200 / PYB-1750
The commercial middle of the market for hard-rock quarries, iron ore, and copper or gold prep circuits.
These are usually the first models to compare when feed is abrasive and PF wear cost looks too high.
18-410 t/h bridge or fine crushing
PYZ / PYD chambers
Plants that already have a secondary stage and need tighter output, smaller chip, or pre-mill feed.
Choose PYZ when you still need some reduction room; choose PYD when target output is already tight.
Main Components
Eight core components — understanding each helps you maintain correctly and order the right spares.
Mainshaft & Mantle
The crushing cone (mantle) is mounted on the mainshaft. It gyrates in an eccentric motion, progressively squeezing material against the bowl liner as it precesses around the crushing chamber.
Bowl & Bowl Liner
The stationary outer crushing surface. Made from high-manganese steel. Three liner profiles — standard (PYB), medium (PYZ), short-head (PYD) — give each series its characteristic crushing chamber geometry.
Eccentric Bushing
Converts the motor's rotary input into the mainshaft's gyratory precession motion. Speed (220–356 RPM depending on model) governs throughput and product size.
Spring Safety System
12–16 coil springs sit between the adjustment ring and frame. They yield before the frame breaks when tramp metal enters, then automatically reset — no manual intervention needed.
Adjustment Ring
Rotating the adjustment ring raises or lowers the bowl, changing the CSS (Closed Side Setting) to control product size. Can be adjusted during operation without stopping the machine.
Dust Seal
Water seal between the frame and bottom of the mantle prevents fine dust from contaminating the lubrication oil — the single most common cause of early bearing failure in cone crushers.
Lubrication System
Forced-feed oil circulation system continuously lubricates eccentric bushing, thrust bearing, and mainshaft bearing. Oil temperature is monitored; the crusher auto-shuts if temp exceeds 60°C.
Drive Shaft & Bevel Gear
Horizontal drive shaft transmits motor power to the vertical eccentric via a pair of bevel gears. Gear mesh quality directly affects noise level and eccentric bearing life.
Industry Applications
Cone crushers excel with hard, abrasive materials where wear cost must be minimised and product shape must be consistent.
Hard Rock Quarrying
Granite, basalt, trap rock
PYB: secondary stage after jaw; PYD: tertiary stage producing 0–15 mm chip.
Iron Ore Beneficiation
Magnetite, hematite, limonite
Secondary crushing to liberate iron minerals before ball mill grinding.
Copper & Gold Mining
Porphyry copper, gold-bearing quartz
Multi-stage cone crushing reduces ore from 150 mm to <12 mm before grinding.
Road Aggregate
Granite, basalt, gabbro
PYD short-head produces 5–15 mm chip where hard-rock wear cost rules out an impact crusher.
Abrasive Materials
Quartzite, silicon carbide ore
Wear-resistant bowl liner and spring protection make cone crushers preferred over impact crushers for highly abrasive feed.
Why buyers move from impact to cone
The main reason is usually wear cost per ton, not raw throughput. On abrasive granite, basalt, iron ore, or quartzite, a cone crusher usually wins once the plant runs long enough for blow-bar replacement cost to matter.
- Better fit for abrasive hard rock and long continuous shifts.
- Tight CSS control supports secondary, bridge, and fine crushing stages.
- PYB, PYZ, and PYD let you match stage duty instead of forcing one chamber to do everything.
What we need to size a PY cone
Send these inputs and we can usually narrow the choice to one chamber family and one or two cone diameters.
- Material type and abrasiveness: granite, basalt, iron ore, copper ore, quartzite, etc.
- Maximum feed size coming from the upstream jaw crusher or screen.
- Target output size or CSS range, such as 12-25 mm or 5-15 mm.
- Required throughput in t/h plus daily operating hours.
- Upstream and downstream machines so the cone can be matched to the full circuit.
How to Select Your PY Model
Start with chamber type, then match cone size to throughput. Our engineers can verify your selection within 24 hours.
01
Choose Chamber Type: PYB, PYZ or PYD
PYB (Standard): secondary crushing, feed up to 300 mm, CSS 12–60 mm. PYZ (Medium): secondary/fine, feed up to 230 mm, CSS 5–30 mm. PYD (Short-head): fine/tertiary, feed up to 100 mm, CSS 3–15 mm. Match to your feed size and required output.
02
Match Cone Diameter to Throughput
Cone diameters: 600 / 900 / 1200 / 1750 / 2200 mm. Larger diameter = higher capacity. Use the capacity table to select the diameter that covers 120% of your target t/h.
03
Set CSS to Target Output Size
CSS controls the finest particle in your product. A 10 mm CSS produces a P80 of roughly 14–18 mm for most hard rock. Tighter CSS reduces throughput — factor this into your circuit balance.
04
Verify Feed Size Does Not Exceed Limit
Each model has a hard maximum feed size. Exceeding it overloads the spring pack and accelerates liner wear. If your jaw crusher discharge is larger than the cone's max feed, add a pre-screen or choose a larger cone diameter.
Not sure which chamber type or size?
Tell us: feed material, feed size, required output size, and t/h target. We'll recommend PYB, PYZ, or PYD and the right cone diameter.
Maintenance Schedule
Oil temperature, dust seal water supply, and liner wear measurement are the three most critical checks for spring cone crusher uptime.
Every 8 Hours
- Check oil temperature at inlet/outlet — normal range 20–60°C
- Verify oil pressure gauge is within spec (0.05–0.15 MPa at bearing outlet)
- Listen for knocking or abnormal vibration — stop immediately if heard
- Inspect discharge for oversize material indicating CSS has shifted
Weekly
- Measure CSS with a lead plug and adjust if outside target
- Inspect dust seal water supply — loss of water seal causes rapid oil contamination
- Check spring tension and look for cracked or broken springs
- Verify bevel gear oil level in gear housing
Monthly / As Needed
- Replace mantle and bowl liner when profile loss exceeds 30%
- Drain, flush, and refill lubrication oil every 3 months
- Inspect eccentric bushing for scoring or excessive clearance
- Check mainshaft keyway and retaining nut torque
Why Choose MarsCrusher PY Series
High productivity with consistent product shape
Spring overload protection for tramp iron
Less downtime with easy bowl liner replacement
Adjustable closed-side setting via hydraulic push button
Dry oil sealing prevents contamination
PY Spring Cone Crusher FAQ
Short answers to common procurement questions before requesting quotation.
How do I choose between PYB, PYZ, and PYD chambers?
PYB is for secondary duty, PYZ for medium/fine transition, and PYD for fine or tertiary duty. Chamber choice depends on feed size and required discharge.
What is the most important factor for cone crusher selection?
Match chamber type first, then cone diameter to throughput with margin. CSS setting should be verified against your final product specification.
Can I adjust product size without long downtime?
Yes. CSS can be adjusted via the adjustment system, but final calibration should always be checked under stable feed conditions.
What failures are most common in cone operation?
The common risk points are lubrication contamination, dust-seal issues, and delayed liner replacement. These directly affect uptime and wear cost.
Need deeper context?
Related Buyer Q&A
Related Case Studies
Complete Your Crushing Line
Ready to Optimize Your Mining Operation?
Our engineers are online and ready to design a custom solution for your project. Get a free consultation and quote today.