DIS

Excavator Friction Disc

Crane shoe brake pads are made from a combination of organic and mineral materials designed to withstand high pressure and extend service life. Their typical thickness ranges from 12 to 20 millimeters, with a coefficient of friction between 0.35 and 0.48. These pads can endure operating temperatures up to 500 degrees Celsius, and their wear rate is recorded at less than 0.08 millimeters per 1,000 kilometers. The pad structure consists of carbon fibers, phenolic resin, and metal particles, providing optimal mechanical and thermal resistance while preventing thermal cracking.

The compressive strength of crane shoe brake pads reaches up to 28 megapascals, and surface hardness varies between 68 and 82 Rockwell C. Surface groove design enhances ventilation, reducing operating temperature by up to 15 percent. These pads can withstand dynamic forces exceeding 2,000 newtons and maintain stable performance in humid and dusty environments. Their lifespan in heavy industrial crane brake systems is estimated at up to 85,000 braking cycles.

Landis Siemens photocell model QRB3

The Landis & Staefa Siemens photocell model QRB3 is an infrared optical sensor used for flame detection in gas or oil burners. It operates reliably with a 220V AC power supply and within an ambient temperature range of -20 to +60 degrees Celsius. The QRB3 model comes with a standard 1.8-meter cable and works with an infrared light detection filter in the 1000 to 1100 nanometer wavelength range. The insulation resistance of the device exceeds 100 megaohms at a test voltage of 500V DC. The sensor can be mounted using either threaded or suitable holder installations.

The QRB3 sensor features an open collector output and is compatible with Siemens flame control units. Its response time is less than 1 millisecond, and it offers a service life of over 100,000 hours of continuous operation. The QRB3 is mechanically resistant to vibration and dust ingress. Its housing is made from materials resistant to heat and UV radiation. This model is designed and manufactured in compliance with EN298 and CE standards.

Disk Micrometers MITUTOYO

Disk Micrometers MITUTOYO | it is a MITUTOYO production and you can measure curve and pipe with Disk Micrometers MITUTOYO and plrase order Disk Micrometers to Moarref Tools company

Gear teeth disk

Great teeth disk that made by tehrangearbox