What is the maximum feed size for the CJ 1060x760 jaw crusher, and how does it affect crushing efficiency?

The maximum feed size for the CJ 1060x760 is 640 mm, which is 85% of the feed opening width (1060 mm). This ratio is critical because it prevents bridging, where larger rocks arch over the opening and block the feed. If you feed material larger than 640 mm, you risk jamming the crusher and causing downtime. For optimal efficiency, the feed should be graded, with no more than 10% of the material at the maximum size. The crushing chamber's nip angle of 22 degrees ensures that once material enters, it is drawn in and crushed without slipping. If you need to process larger feed, consider a larger model or a primary breaking step.

How often should I adjust the discharge setting on the CJ 1060x760, and what is the procedure?

The discharge setting should be checked daily and adjusted as needed to maintain the desired product size. Jaw plate wear typically causes the setting to increase by 1-2 mm per 100 hours of operation. To adjust, first stop the crusher and lock out the power. Then, use the hydraulic pump to move the wedges. Each full turn of the pump handle moves the wedge by 0.5 mm. Measure the gap between the jaw plates at the bottom of the crushing chamber using a feeler gauge or a lead wire. Adjust until the gap matches your target setting. After adjustment, run the crusher empty for 5 minutes to ensure the wedges are seated, then resume feeding. Always refer to the operation manual for detailed instructions.

What is the expected wear life of the jaw plates, and what factors influence it?

The wear life of the Mn18Cr2 jaw plates depends on the abrasiveness and hardness of the feed material, as well as the throughput and discharge setting. In typical hard rock (e.g., granite, basalt) with a Mohs hardness of 6-7, you can expect 1,000 to 1,500 hours of life per side. If you process highly abrasive material like quartzite, life may drop to 800 hours. Operating with a tight discharge setting (e.g., 100 mm) increases wear because the material stays in the chamber longer. To maximize life, maintain a full chamber (choke feeding) and avoid feeding material that is too fine, which can cause peening. Reversing the plates when the first side wears out can double the total life.

Can the CJ 1060x760 be used in a mobile crushing plant, and what are the weight and dimension considerations?

Yes, the CJ 1060x760 is commonly used in mobile track-mounted plants. The crusher itself weighs approximately 24,000 kg, and the complete mobile plant typically weighs between 50,000 and 70,000 kg, depending on the feeder, conveyor, and power unit. The crusher's compact footprint (3,200 mm long x 2,800 mm wide x 3,000 mm high) makes it suitable for integration into a mobile chassis. However, the plant must be designed with a robust frame to handle the dynamic loads. The crusher's motor can be powered by the plant's diesel engine via a hydraulic drive or a generator set. For mobile applications, consider a hydraulic wedge adjustment system for quick setting changes on site.

CJ Series Jaw Crusher

CJ Series Jaw Crusher – 1060x760mm Feed Opening for 150-500 t/h Primary Crushing

The CJ series jaw crusher is a heavy-duty primary crushing unit engineered for continuous operation in mining, quarrying, and construction demolition recycling. With a 1060 mm x 760 mm feed opening, it accepts feed material up to 640 mm and delivers a throughput of 150 to 500 tonnes per hour, depending on closed-side settings.

Feed Opening

1060 mm x 760 mm

Maximum Feed Size

640 mm

Capacity

150-500 t/h

Motor Power

110 kW

Request A Quote Send E-mail

How Does the CJ Series Jaw Crusher Achieve 150-500 t/h Throughput?

The CJ series jaw crusher is defined by its 1060 mm by 760 mm feed opening, which sets the maximum feed size at 640 mm. This geometry, combined with a 250 rpm eccentric shaft speed and a 110 kW drive motor, produces a throughput range of 150 to 500 tonnes per hour. The crusher's motion is driven by a forged eccentric shaft mounted in spherical roller bearings, which handle both radial and axial loads. The crushing chamber features a steep nip angle that ensures a continuous material flow without bridging. The jaw plates are made from high-manganese steel (Mn18Cr2), offering a work-hardening surface that resists abrasion when processing abrasive rocks like granite and basalt. The discharge setting is adjusted via hydraulic wedges, allowing changes from 100 mm to 200 mm in minutes, not hours. This level of control is critical for operations that need to switch between product sizes or compensate for wear.

Typical applications for this specific model include primary crushing in hard rock quarries, recycling of construction and demolition waste, and ore processing in mining operations. In a quarry producing 300 tonnes per hour of 0-300 mm aggregates, the CJ 1060x760 can serve as the primary crusher, reducing run-of-mine rock from 600 mm to a 150 mm product for secondary crushing. In recycling, it handles reinforced concrete with rebar, thanks to its robust frame and ability to pass uncrushable material through a tramp iron relief system. The high throughput and large feed opening reduce the need for secondary breaking, lowering overall operating costs. The crusher's compact footprint relative to its capacity makes it suitable for mobile track-mounted plants, where space and weight are constrained.

Compared to smaller jaw crushers in the CJ series, such as the 760x510 model, this 1060x760 unit offers a 40% larger feed opening and up to 2.5 times the capacity. This makes it the preferred choice for medium-to-large scale operations that require a single primary crusher to handle the entire feed. Unlike impact crushers, the jaw crusher's compression crushing action produces less fines and is more effective on hard, abrasive materials. The CJ 1060x760 also features a more robust frame and larger bearings than its smaller siblings, ensuring a longer service life under continuous duty. For operations that need to process 500 tonnes per hour, this model can be configured with a larger motor and optimized jaw plates to achieve that top-end capacity.

Hydraulic wedge adjustment allows discharge setting changes from 100 mm to 200 mm in under 10 minutes, reducing downtime by up to 70% compared to shim adjustment.
Reversible jaw plates (Mn18Cr2) provide up to 1,500 hours of wear life on abrasive feed, and can be flipped to use the other side, cutting plate costs by 50%.
Spherical roller bearings (240/600 series) with a dynamic load rating of 3,600 kN support the eccentric shaft, ensuring reliable operation even under extreme radial loads.

Core Technical Features and Quantified Advantages

STEP 1

1060x760mm Feed Opening with 640mm Max Feed Size

The 1060 mm by 760 mm feed opening accepts feed material up to 640 mm, which is 85% of the opening width. This ratio minimizes bridging and ensures a steady flow of material into the crushing chamber. The deep crushing cavity, with a height of 1,800 mm, provides a high reduction ratio of up to 6:1, allowing a single unit to reduce run-of-mine rock to a 150 mm product. The feed opening is lined with wear-resistant plates that can be replaced individually, extending the service life of the frame.

STEP 2

110 kW Motor and 250 rpm Eccentric Shaft for 150-500 t/h

A 110 kW (150 hp) motor drives the eccentric shaft at 250 rpm, generating a crushing force of up to 2,500 kN at the jaw plates. This combination delivers a throughput of 150 to 500 tonnes per hour, depending on the closed-side setting and material characteristics. The motor is mounted on an integrated base, eliminating the need for separate alignment during installation. The V-belt drive is protected by a guard that meets OSHA standards, and the belt tension can be adjusted without removing the guard.

STEP 3

Hydraulic Wedge Discharge Adjustment (100-200mm)

The discharge setting is adjusted by hydraulic wedges, which can be moved in or out to change the gap between the jaw plates from 100 mm to 200 mm. This system eliminates the need for shims and allows one operator to make the adjustment in under 10 minutes using a handheld hydraulic pump. The wedges are made from hardened steel (HRC 55-60) and are self-locking, ensuring the setting remains constant during operation. This feature is particularly valuable for operations that need to switch between product sizes or compensate for jaw plate wear.

STEP 4

Mn18Cr2 Jaw Plates with Reversible Design

The jaw plates are cast from high-manganese steel (Mn18Cr2) with a hardness of 200 HB in the as-cast condition. Under impact, the surface work-hardens to 500 HB, providing excellent wear resistance. The plates are reversible, meaning they can be flipped to use the other side, effectively doubling the wear life. In typical hard rock applications, a set of plates lasts between 1,000 and 1,500 hours. The plates are secured with wedges and bolts, allowing replacement in 4-6 hours by two technicians.