JRC List of Products and Services

It is an idler that supports the belt on the side that transports the cargo (the carrier side) of a belt conveyor that carries bulk materials such as crushed stone, soil, sand, gravel, ore, and grains.

• Tunnel construction
• Dam construction
• Transport machinery

In addition to "bulk items" such as beer cases, cement bags, and grain bags, it can also be used for belt conveyors that transport "loose items" via skirt rubber. It is also compatible with conveyors using corrugated belts and steep incline belts.

• Tunnel construction
• Dam construction
• Transport machinery

This is a Laura two-chamber carrier idler. Its application is similar to that of a standard carrier idler, but it can also be used with conveyors that have slatted belts.

• Tunnel construction
• Dam construction
• Transport machinery

The impact of falling materials from hoppers and chutes is mitigated by the deformation of groove-shaped impact rubber, which alleviates damage to belts and idlers.

• Tunnel construction
• Dam construction
• Transport machinery

The impact of falling materials from hoppers and chutes is mitigated by the deformation of hollow-type impact rubber, which alleviates damage to belts and idlers.

• Tunnel construction
• Dam construction
• Transport machinery

This is a roller of the flat carrier idler (JFC type) made into an impact type. The impact rubber with a groove shape reduces the impact of falling materials from the hopper or chute by deforming, thereby alleviating damage to the belt and idler.

• Tunnel construction
• Dam construction
• Transport machinery

When the belt comes into contact with the guide roller positioned in front of the pivot axis connecting the upper and lower double-structured frame, the frame (F2) pivots within a certain angle range. The resultant force generated at this time, due to the function that returns the belt to the center of the conveyor, allows for adjustments of wandering and misalignment with minimal force applied, resulting in less damage to the belt.

• Tunnel construction
• Dam construction
• Transport machinery

This is an automatic centering carrier idler with a tapered design based on the JAC type side roller. Due to the larger diameter on the center side of the belt and the smaller diameter on the end side, the difference in surface peripheral speed of the roller during belt contact causes a tracking adjustment. The frame rotates towards the side where the belt is offset, enhancing functionality. It can be used without the need for directional indication and is compatible with both forward and reverse operation conveyors.

• Tunnel construction
• Dam construction
• Transport machinery

Similar to the JAC-T type, this is a tapered automatic centering carrier idler with side rollers. The principle of the zigzag adjustment function is the same; however, as a structural difference, a pivot axis is placed at the bottom of each roller support on the left and right, eliminating the pivot frame to improve pivot sensitivity. This product can also be used in conveyors for both forward and reverse operation.

• Tunnel construction
• Dam construction
• Transport machinery

It is an idler that can tilt the stand in the direction of the belt's movement. It helps to reduce "work time" and "risk rate" during roller replacement.

• Tunnel construction
• Dam construction
• Transport machinery

It is an idler that supports the belt on the return side of the belt conveyor.

• Tunnel construction
• Dam construction
• Transport machinery

This is a return idler that connects two rollers with a joint link. It has a structure where the belt does not come into contact with the rollers at the center of the belt width.

• Tunnel construction
• Dam construction
• Transport machinery

This is a return idler that places multiple rubber rings on the surface of a steel roller to reduce the contact length with the belt, thereby decreasing the drop of materials adhering to the belt (material fall).

• Tunnel construction
• Dam construction
• Transport machinery

Similar to the one with a sleeve, this return idler is specialized in reducing the drop of materials adhering to the belt (falling ore) by placing multiple rubber rings on the surface of the iron roller.

• Tunnel construction
• Dam construction
• Transport machinery

The roller surface, which has a symmetrical spiral shape, has the function of scraping off the "adhesion" of transported items that cause the belt to wander or become misaligned while rotating.

• Tunnel construction
• Dam construction
• Transport machinery

The unit consists of one press roller and two spiral rollers to form a three-roller unit, which forcibly scrapes off attachments on the belt and promotes "falling ore."

• Tunnel construction
• Dam construction
• Transport machinery

It is a two-slot return idler. Unlike a standard return idler, it uses two rollers and has a trough angle, providing it with the ability to correct wandering.

• Tunnel construction
• Dam construction
• Transport machinery

When the belt comes into contact with the guide roller positioned in front of the pivot axis connecting the upper and lower double-structured frame, the frame pivots within a certain angle range. The resultant force generated at this time, combined with the function that returns the belt to the center of the conveyor, allows for adjustment of wandering and misalignment with minimal force applied, reducing the risk of belt damage.

• Tunnel construction
• Dam construction
• Transport machinery

This is an automatic centering idler on the return side that uses tapered rollers. Due to the larger diameter in the center of the belt and the smaller diameter at the ends, the difference in surface speed of the rollers during belt contact activates the tracking and alignment adjustment function. The frame pivots toward the side where the belt is misaligned, promoting the adjustment function.

• Tunnel construction
• Dam construction
• Transport machinery

Similar to the JAR-T type, the side rollers are tapered return idlers. The principle of occurrence for meandering and offset adjustment is the same, but as a structural difference, a pivot axis is arranged at the bottom of each tapered roller support on the left and right, eliminating the pivot frame to improve pivot sensitivity. This product can also be used in conveyors for both forward and reverse operation.

• Tunnel construction
• Dam construction
• Transport machinery

This is a self-aligning idler on the return side, arranged to press a tapered roller against the top surface of the belt within a double-structured frame. It has a high ability to correct wandering due to its ease of conforming to the curling tendency of the return belt.

• Tunnel construction
• Dam construction
• Transport machinery

This is a self-aligning idler on the return side, designed to press a tapered roller against the upper surface of the belt within a double-structured frame. It has a high ability to correct wandering due to its ease of following the curling tendency of the return belt.

• Tunnel construction
• Dam construction
• Transport machinery

This is an idler that corrects the wandering of the return side belt using belt tension and frictional force. Since the roller contacts the back surface of the belt, there is no adhesion of transported items to the roller.

• Tunnel construction
• Dam construction
• Transport machinery

Similar to the ARP-2 type, this idler corrects the wandering of the return side belt by utilizing belt tension and friction. Since the roller contacts the back surface of the belt, there is no adhesion of transported items to the roller. Additionally, it can also be used for conveyors operating in both forward and reverse directions.

• Tunnel construction
• Dam construction
• Transport machinery

This is an idler that corrects the wandering and misalignment of the return side belt using belt tension and frictional force. It features a mechanism where the corrective force increases in proportion to the symptoms. Since it contacts the back side of the belt conveying surface, there is no adhesion of transported items to the roller.

• Tunnel construction
• Dam construction
• Transport machinery

These are various guide idlers that hold the belt ear section. They have the effect of suppressing symptoms when belt wandering or misalignment occurs.

• Tunnel construction
• Dam construction
• Transport machinery

This is a guide idler that strongly corrects the belt's wandering and skewing by arranging three drum-shaped guide rollers and tilting them in the direction of the belt's movement to generate thrust.

• Tunnel construction
• Dam construction
• Transport machinery

This is a carrier idler connected by joint links for each roller. Its purpose is similar to that of a standard carrier idler, but it has the function of deforming in response to uneven loads during transport, thereby preventing spillage and belt misalignment.

• Tunnel construction
• Dam construction
• Transport machinery

This is a steel pipe roller made according to the most commonly used JIS standards. The roller that supports the belt on the carrying side (carrier side) is called a carrier roller.

• Tunnel construction
• Dam construction
• Transport machinery

The impact of materials falling from hoppers and chutes onto the conveyor is mitigated by the deformation of a rubber ring shaped like a mountain, which helps reduce damage to the belt and idlers. Please use it for materials with a relatively light specific gravity (1.0t/m³ or less) or those with weak drop impacts. Trough angles of 35° and those not listed are made to order.

• Bridge Construction