Stone Crusher

Double Toothed Roll Crusher

CAPACITY

300-1000t/h

FEED SIZE

≤400mm

Application areas：High-capacity primary or secondary sizing of coal, coal gangue, limestone, shale, clay and other suitable low- to medium-hard materials in mining, coal preparation, power, cement and industrial processing plants.

Applicable materials：Coal, coke, coal gangue, limestone, gypsum, shale, clay and other low- to medium-hard materials confirmed by crushing tests.

GET A QUOTE CHAT NOW PDF Download

Introduction
Advantages
Working principle
Parameters

Product Overview

The XINGAONAI 2PGC Double Toothed Roll Crusher is a high-capacity sizing crusher designed to reduce coal, coal gangue, limestone, shale and other suitable low- to medium-hard materials.

Two counter-rotating toothed rolls grip the feed and draw it into the crushing zone. The material is reduced by a combination of compression, splitting and shearing before passing through the space between the rolls.

The 2PGC series includes models with roll diameters from 900 to 1,200 mm and roll-face widths from 2,000 to 3,000 mm. Depending on the model and actual feed conditions, the crusher accepts material up to 300–400 mm and provides capacities from 300 to 1,000 t/h. The listed product size is up to 90 mm.

Different tooth profiles and tooth arrangements may be selected according to feed size, material behaviour and the required product distribution. Final equipment selection should consider hardness, abrasiveness, moisture, clay content, maximum lump size and target output.

Key Advantages

Controlled Product Size With Less Over-Crushing

The toothed-roll sizing mechanism produces a controlled product with less impact-related over-crushing than high-speed impact crushing under suitable conditions. Product size is determined mainly by the tooth profile, tooth arrangement and roll spacing. According to the listed models, the maximum product size is up to 90 mm.

High-Capacity Crushing

Wide roll faces and dual-roll crushing provide rated capacities from 300 to 1,000 t/h, making the 2PGC series suitable for large coal, mining and industrial material-handling plants.

Improved Handling of Suitable Wet or Sticky Feed

The toothed rolls provide positive gripping and shearing action that can handle certain moist, clay-bearing or sticky materials more effectively than smooth-roll crushers. Extremely wet or cohesive feed should still be tested because it may build up in the feed chute or between the teeth.

Replaceable Tooth Components

Coarse and fine tooth profiles, tooth spacing and tooth arrangement can be selected according to feed size and product requirements. Confirm whether the supplied model uses replaceable tooth segments, tooth rings or an integral roll structure before publishing specific maintenance claims.

Overload Protection

Depending on the supplied configuration, a mechanical or hydraulic protection system allows the movable roll assembly to relieve excessive load or certain uncrushable objects. The exact protection and reset method should be confirmed for each model.

Low-Speed Crushing

Relatively low-speed crushing reduces high-velocity impact and may produce less dust, vibration and excessive fines than impact-type crushing for the same suitable material.

Working Principle

Feed material enters the crusher from the upper inlet and falls between two counter-rotating toothed rolls. The roll teeth grip large pieces and pull them into the crushing zone. As the rolls rotate, the material is reduced by compression, splitting and shearing between the teeth and roll surfaces. Material small enough to pass through the selected tooth spacing and roll gap is discharged onto the downstream conveyor. Oversized particles remain in the crushing zone until they are reduced sufficiently. Depending on the machine configuration, the movable roll or protection system can relieve excessive load when certain uncrushable objects enter the chamber. The tooth profile and roll spacing are selected according to the feed size and required product distribution. Actual capacity and product size depend on material hardness, abrasiveness, moisture, clay content, feed distribution and equipment settings.

Technical Parameters

Model	Rotor diameter (mm)	Roller surface width (mm)	Feed size (mm)	Output size (mm)	Motor power (kW)	Capacity (t/h)
2PGC90200	900	2000	≤300	≤90	2x90	300
2PGC100250	1000	2500	≤350	≤90	2x160	600
2PGC120300	1200	3000	≤400	≤90	2x220	1000

Model

Rotor diameter

(mm)

Roller surface width

(mm)

Feed size

(mm)

Output size

(mm)

Motor power

(kW)

Capacity

(t/h)

2PGC90200

900

2000

≤300

≤90

2x90

300

2PGC100250

1000

2500

≤350

≤90

2x160

600

2PGC120300

1200

3000

≤400

≤90

2x220

1000

Need Help Choosing the Right Equipment?

Tell us your material type, maximum feed size, required capacity and final product specifications. Our engineers will recommend the right equipment model and process solution for your project.

Talk to an Engineer

Frequently Asked Questions

The listed 2PGC models produce material up to 90 mm. The actual product distribution depends on tooth profile, tooth spacing, roll gap, feed grading and material characteristics. If a substantially finer product is required, a smaller smooth-roll crusher or another fine-crushing stage may be more appropriate.

Depending on the supplied configuration, the overload-protection system allows the movable roll assembly to relieve excessive load or pass certain uncrushable objects. Large tramp metal can still damage the teeth, shafts or downstream equipment, so upstream magnetic separation and metal detection are recommended.

This 2PGC crusher is primarily intended for coal, limestone, shale and other suitable low- to medium-hard materials. Hard or highly abrasive rock can cause rapid tooth wear and should not be selected without crushing tests and manufacturer confirmation. Jaw and cone crushers are normally more appropriate for hard, abrasive rock.

The toothed rolls provide positive gripping and shearing action and may handle certain moist or clay-bearing materials better than smooth rolls. However, extremely wet or cohesive feed may still build up in the chute or teeth. Provide the maximum moisture and clay content before selection.

Provide the material type, maximum and typical feed size, required capacity, target product size, bulk density, moisture, clay content, hardness, abrasiveness and operating hours. These conditions determine the roll diameter, roll-face width, tooth profile, motor power and protection system.

Inspect the teeth, tooth seats, roll shafts, bearings and drive system regularly. Uneven tooth wear can change product size and load distribution. Inspection and replacement intervals should be based on throughput, material abrasiveness, operating hours and measured wear rather than a universal number of hours.