Impact Crusher

What is an Impact Crusher? What is its Core Purpose?

The core purpose of an impact crusher is material crushing and shaping. It crushes large-size raw materials into medium or fine aggregates with uniform particle size, which is suitable for high-quality aggregate production, mineral processing crushing, construction waste recycling and other working conditions.

Impact crushers are essential equipment in aggregate production lines. They can handle materials with medium hardness or low hardness efficiently, and produce cubic finished products with few needle-like particles. After crushing by impact crusher, materials can be directly used for road construction, building construction, concrete mixing and other fields. It is a high-efficiency crushing machine designed for continuous operation, which can quickly complete coarse, medium and fine crushing operations and provide qualified materials for downstream processes.

How Does the Impact Crusher Transform Rock into Uniform Aggregate?

The Impact Crusher works on the principle of high-speed impact and rebound crushing.

Inside the crusher, there are rotor assembly with hammerheads, impact plates, crushing chambers and other key components. When the rotor rotates at high speed, the hammerheads throw the materials into the crushing chamber.

• Impact Crushing Zone: Materials are hit by high-speed hammerheads and crushed instantly.
• Rebound Crushing Zone: Crushed materials fly to the impact plate and rebound, colliding with subsequent materials for secondary crushing.
• Shaping Zone: Materials are repeatedly impacted and rubbed between hammerheads and impact plates, finally forming uniform cubic aggregates and discharged from the bottom.

The rotor speed and impact plate gap are adjustable. By changing these parameters, you can control the discharging particle size accurately and meet different production needs.

Single Rotor vs. Double Rotor: Which Configuration Suits Your Material?

1、Single Rotor Impact Crusher (For Medium and Small Output)

Structure: Single high-speed rotor, compact structure, small footprint.

Advantage: Low investment cost, easy operation and maintenance, suitable for small and medium-sized production lines.

Usage: Secondary crushing of limestone, dolomite and other soft materials; small quarry and construction waste disposal.

2、Double Rotor Impact Crusher (For Large Output and High Hardness)

Structure: Two rotors work in series, stronger crushing force.

Advantage: Large crushing ratio, high output, can handle large-size materials directly.

Usage: Primary and secondary crushing of large mines, large-scale sand and gravel plants, high-capacity aggregate production.

Different Impact Crusher Applicable Materials

• According to the structure and motion mode:
• Single Rotor Impact Crusher: Limestone, coal gangue, construction waste, dolomite and other medium-low hardness materials.
• Double Rotor Impact Crusher: Basalt, granite, quartz, river pebble and other medium-high hardness materials.
• Mobile Impact Crusher: On-site crushing of construction waste, open pit mine short-distance transfer crushing.

Single Rotor vs. Double Rotor: Which Crushes Your Ore More Efficiently?

Single Rotor Impact Crusher

• Suitable for: Small output, limited site, soft to medium hardness materials.
• Features: Low power consumption, simple structure, low failure rate.
• Recommended for: Small quarry, brick factory, construction waste recycling station.
  Double Rotor Impact Crusher
• Suitable for: Large output, large stone yard, mining coarse crushing.
• Features: High crushing efficiency, large feeding size, good particle shaping.
• Recommended for: Large sand and gravel base, mine crushing production line, high-speed railway aggregate production.

Crusher Production Line Design

Impact Crushers for Sale

If you are interested in impact crusher, please feel free to contact us! We will provide you with more than two solutions for you to choose from.

Key Wear Parts of Impact Crusher

Hammerhead

• High chromium alloy hammerhead: High wear resistance, long service life, suitable for hard materials.
• Mn13Cr2 hammerhead: Good toughness, impact resistance, suitable for medium hardness materials.

Impact Plate

• High manganese steel impact plate: Strong impact resistance, not easy to break.
• Alloy casting impact plate: Wear resistance improved by 30% compared with ordinary materials.

Liner Plate

• Wear-resistant alloy liner: Protect crushing chamber, reduce maintenance frequency.
• Adjustable design: Can adjust discharging size conveniently.
  

Impact Crusher Technical Parameter Table

Model	Rotor Diameter×Length (mm)	Rotor Speed (r/min)	Feeding Size (mm)	Discharging Size (mm)	Capacity (t/h)	Motor Power (KW)	Weight (T)
PF1007	1000×700	1000	≤300	0-20	10-40	45	8.5
PF1010	1000×1000	950	≤350	0-25	20-60	55	11.5
PF1210	1250×1000	850	≤400	0-30	30-90	75	17.5
PF1214	1250×1400	800	≤400	0-30	40-120	110	23
PF1315	1320×1500	750	≤500	0-35	70-160	160	30
PF1320	1320×2000	700	≤500	0-35	100-220	220	38
PF1415	1450×1500	700	≤600	0-40	120-280	280	45
PF1620	1650×2000	650	≤700	0-40	200-400	400	68
PF1820	1800×2000	600	≤800	0-40	300-600	630	95

Mobile Impact Crusher – Advantageous Products

Our company specializes in providing custom-designed mobile impact crushers, with strong mobility and high integration. It integrates feeding, crushing, screening and conveying in one, which can be directly driven to the crushing site. It eliminates material transportation cost and time, and realizes on-site efficient crushing of construction waste, ore and stone materials. It is especially suitable for scattered mining, urban construction waste treatment and temporary project crushing.

LEIKE hot sale Jaw Crusher

Why is Output Size Critical for Downstream Sand Making or Ball Milling?

Discharging granularity of impact crusher directly decides later sand maker and ball mill operating efficiency. Too big finished grain increases downstream equipment load and abrasion; too fine grain causes over-crushing and capacity drop. LEIKE impact crusher adjusts cavity gap flexibly to match different downstream production needs.

Impact crusher structure and working principle

Main composition: Feed hopper, rotor assembly, blow bar, impact plate, crushing chamber, adjusting device, machine frame, driving pulley, motor and transmission parts.

Working Principle: Motor drives rotor high-speed rotating via V-belt; blow bar hits incoming stones fiercely, materials get multiple impact crush between blow bar and impact plates, qualified aggregate falls out from bottom gap. Adjustment device changes gap size to control finished product specification freely.

Why LEIKE Machine impact crushers?

• Excellent shaping effect: Cubic finished aggregate, low needle content to meet high-standard construction aggregate
• Energy-saving optimized rotor design, reduce power consumption 10%-15% vs traditional old models
• High alloy wear spare parts, longer service life, lower later maintenance cost
• Hydraulic flip cover optional, quick replacement of blow bar and impact liner, save repair downtime
• Full closed dustproof shell, good environmental performance for urban waste crushing
• Complete spare parts supply system, global after-sales support

High Manganese Steel vs High Chromium Alloy: Which Blow Bar Lasts Longer?

High manganese blow bar: Strong impact resistance, suitable for big lump coarse secondary crushing;

High chromium alloy blow bar: Higher surface hardness, outstanding wear resistance, fit fine crushing and high abrasive raw material processing, service life 1.5 times longer than manganese steel parts.

How Does the Impact Plate Gap Adjustment Affect Production Efficiency?

Big gap: Higher output, coarser finished material for secondary crushing after jaw crusher;

Small gap: Lower hourly yield, finer grain for tertiary sand making. LEIKE wedge/hydraulic adjustment without dismounting machine shell, convenient on-site parameter tuning.

Rolling Bearings vs Sliding Bearings: Can You Really Save 15% Energy?

All LEIKE impact crushers equip double-row spherical roller bearing instead of traditional sliding bearing, small friction resistance, save 10%-15% power, only regular grease filling lubrication without complicated thin oil station, simple daily maintenance.

Open Circuit vs Closed Circuit: Why Pair an Impact Crusher with a Vibrating Screen?

Open circuit: Single machine crushing, finished material mixed with oversize coarse grain;

Closed circuit collocation with vibrating screen: Oversized stones return back to impact crusher for re-crushing, improve finished grain uniformity and whole line capacity by 25% around.

How to Calculate the Correct Impact Crusher Capacity for Your Plant?

Model selection basis: Material hardness, max feeding lump size, required finished granularity, target hourly output. Send your raw material information to our engineer, we make targeted model selection and production line layout plan.

Customer Cases