wire rope limit switch quotation

When your load exceeds the lifting capacity of you crane, load limiters will cut power from lifting your load higher. This can save your life, avert lost downtime from a damaged crane, and prevent expensive accidents and insurance claims.

If you are using a hoist that is not equipped with overload protection or require a new load limiter, let us know. We will supply you with a limit switch that meets your exact needs. Whatever your single line load capacity, work environment, or wire rope size, your limit switch will be custom made to your requirements.

These load limit switches can be installed onto a hoist at the rope"s dead end or equalizer sheave. It can be designed for other installations with a power reel or remote control. You"ll find these limit switches to be extremely easy to install - you simply clamp them onto the wire rope without having to cut the rope or make modifications to the hoist.

The load limit switch is activated from the deflection of the rope when the hook lifts the load. This increases the tension of the rope, which activates the limit device. The device can be electrically connected with the hoist"s switch for either up or down motion, depending on the motion to be controlled. As well, it can work as both an upper limit switch and load limit switch as a special order.

All Load Limit Switches provide alarm via the Tension Plate Activated Switch. All models are available in a slack wire rope. A regular limit switch is with a single pole, but on request you can add a double pole (2 speeds) for special applications.

The load limit switch can be installed onto a hoist at the rope"s dead end or equalizer sheave. It can be designed for other installations with a power reel or remote control.

The load limit device is activated from the deflection of the rope when the hook lifts the load. This increases the tension of the rope, which activates the limit device. The device can be electrically connected with the hoist"s switch for either up or down motion, depending on the motion to be controlled. As well, it can work as both an upper limit switch and load limit switch as a special order.

Upper Limit - if the hoist were to travel past its upper limit, the hook block would catch on the limit switch plug activating the switch to stop the hoist. (DF Series).

Remove the clamp and roller from the limit device. Place the limit device at the highest point on the rope"s dead end, leaving enough room for the load limit device to avoid contact with other parts, the crane or hoist.

Fasten the limit device to the rope, making sure the clamp is tight against the rope. Now, connect limit device electrically. Connect in series with the coil of contactor up for single speed hoist. The opposite connections are for slack rope.

As an established member in the industry, we will continue our endeavors in delivering better products and services to our new and old customers. Workshop & Production SUNS Product & Service 1. A:Where is your company9 Q:We are a USA company and have our own manufacture factory in Fujian China. 5. A:What is your delivery time 9 Q:Delivery lead time 2-4 weeks normally Our Service Provide wide variety of Limit Switch, Foot Switch, Micro Switch, Industrial Switch,etc.

providing the ultimate clamp-on cable overload protection. Always easy to install–just minutes with a screwdriver and Allen wrench–this mechanically actuated force control and overload protection switch is an affordable, effective warning system.

Designed for usage where it is not possible to mount a DynaSwitch®, the Cranegard® clamps on cables for wire rope hoist, elevator and crane overload prevention and slackline detection.

Installation is simplicity itself . Clamp the Cranegard® directly onto a slack hoist or crane wire rope quickly without severing rope or interrupting service. Up to four switches can be furnished. The Cranegard® load limit device actuates immediately when the pre-set load limit is exceeded.

Wire rope limit switch for Tadano Faun reference 323-701-50030. Parts Supply Worldwide offers safe load indicators parts and oem systems for Tadano TR250M 5 mobile cranes and heavy machinery equipment. Visit our parts catalog and send your request for quote!

The rope-operated switches for emergency stop are mainly suitable for emergency stop or alarm systems for machinery which occupies a large space. This emergency stop can be achieved from any point when the rope is manually pulled each time.

No less than two wraps of rope shall remain on the drum at each anchorage of the hoist(ing) drum when the hook is in its extreme low position unless a lower-limit device is provided, in which case no less than one wrap shall remain.

Question 1: When the hook is in its "extreme low position," does this mean that the hook is at its lowest point of travel when all of the rope has been unwound, except for the required wraps?

Although the term "extreme low position" is not specifically defined in 29 CFR 1910.179, nor in its source standard, American National Standard Safety Code for Overhead and Gantry Cranes, ANSI B30.2.0-1967, the extreme low position would be the lowest point that the hook could rest on the ground or floor while maintaining at least two wraps of rope. The requirements in the standard are designed so that sufficient and properly fastened rope remains on the drum and the rope does not slip off the drum.

Question: Would a crane with a lower-limit switch installed, that stops the lower travel with at least two wraps remaining on the drum and the hook does not rest on the ground or floor meet OSHA requirements?

Reply: OSHA would consider a crane with a lower-limit switch that stops the lower travel of the hook with at least one or two wraps remaining and does not rest on the ground or floor as a de minimis violation. OSHA"s de minimis enforcement policy is that if an employer complies with the clear intent of a standard but deviates from its particular requirements in a manner that has no direct or immediate relationship to safety or health, then the violation will be considered de minimis. Consequently, no citation would be issued. A lower-limit switch, in addition to the required wraps, would provide protection from over-spooling before the load reaches the floor or ground.

Two Way Roller Lever Limit Switches are for used for EOT Cranes, Electric Hoists, Material Handling Equipment, Wagon Shunting Devices etc., to prevent over travel or traverse on power & control circuit up to 500 V.A.C. 50 cycles/second and 40 amps continuous current.

When used as a series Two Way Lever Limit Switch the maximum permissible frequency of operation is 1000 operations per hour. When used as series Limit Switch the maximum permissible frequency of operation is 720 operations per hour.

Two Way Roller Lever Limit Switch is remains closed and cuts off power to stop the motor of the crane. The Lever limit Switch operates when it reaches a predetermined position when the lever is moved over a projecting member / bracket fixed on the girder. The series limit switch is fitted with four sets of contacts which cuts off two phases of the motor in both direction and is suitable for 500 Volts 50 C/s AC supply system.

The Lever limit Switch contacts are automatically reset when the lever returns to zero position due to spring action. The housing of Lever Limit Switch is made of sheet steel suitably reinforced to give exceptional rigidity. The Cam shaft is mounted in the housing on moulded bushes (bearings) to synthetic material fixed to the front and rear walls. These bearings do not require any lubrication.

On request, the Lever Limit Switch are also made of Cast Iron / Cast Aluminium, IP-54 enclosure. The base and cover have machined surface to protect against dirt and dust.

The Lever Limit Switch contact boxy is made of high-grade melamine suitable for heavy duty, non-tracking and is capable of withstanding heavy arcing. The contacts have a maximum current capacity of 40 amps at 500 V.A.C.

Our adjustable Limit Switch Trigger offers an easy-to-install means of activating the trolley travel limit switch. Trolley or bridge travel limit switches are safety devices used to prevent the motorized trolley or bridge from striking the end stops of the monorail, crane or runway at a high speed. It’s designed to prevent damage to the lifting system, the load and personnel.

Top Rotary limit switch is used to control and measure the movement of industrial machines or the position of the nacelle or pitch angle of wind turbines. Specifically, TER"s Top rotary limit switch is saline fog resistant and rich in options and designed to meet the most demanding requirements.