HOME > PRODUCTS > ALIGNMENT SENSORS AND SWITCHES > BRASS RUB BLOCKS

Brass Rub Blocks
Belt Misalignment Sensors

Brass rub blocks monitor for belt misalignment problems on bucket elevators and conveyors by detecting heat generated by the friction of the misaligning belt rubbing against the brass.

A temperature sensor within the brass block provides the temperature reading and the system generates an alarm and a shutdown when a trip point is reached.

The sensors are usually installed in pairs on opposite sides of the machine to detect misalignment on either side. Sensors can be connected directly to a PLC input, or for greater safety, to a central independent monitoring system such as 4B’s IE-Node, Watchdog™ Super Elite or T400N Elite Hotswitch.

Inspection doors are available to assist with periodic maintenance and testing of the brass rub block and system.

Features:

Brass Rub Block Belt Misalignment Sensor

• Belt Misalignment Monitoring

• Easy Installation

• No Moving Parts (Solid Brass Block)

• Temperature Activated (Friction)

• External Sensor Testing (ADB Tester)

• Compatible with all the ADB temperature sensors (NTC, Pt100, 4-20 mA)

• Extensive range of models and combinations to fit any application

Product Questions? (309) 698-5611

or Email

Specifications
Downloads
Accessories
Monitoring Systems
FAQ's
Images


	ADB Temperature Sensor Specifications (NTC Type):		Literature:
	• Resistance at 77° F - 10,000 Ohms		• Product Datasheet
	• Supply Voltage - 5 to 24 VDC
	• Body Housing - 304 Stainless Steel		Technical:
	• Cable - 9 ft (3 m) Blue Cable, with 2 Conductors 20 AWG		• 4 x 2 Inspection Door Manual
	• Operating Temperature -22° F (-30° C) to 220° F (105° C)
			Dimensions:
	ADB Temperature Sensor Specifications (PT100/RTD Type):		• 2 x 4 Rub Block (RB2W4LR2)
	• Resistance at 77° F (25°C) - 109.73 Ohms		.dwg (AutoCAD) .pdf
	• Supply Voltage - 5 to 24 VDC
	• Body Housing - 304 Stainless Steel		• 2 x 4 Inspection Door (RBID3X9)
	• Cable - 9 ft (3 m) Yellow Cable, with 4 Conductors 20 AWG		.dwg (AutoCAD) .pdf
	• Operating Temperature -22° F (-30° C) to 220° F (105° C)
			• 2" Round Rub Block (RB2D)
	ADB Temperature Sensor Specifications (4-20 mA Type):		.dwg (AutoCAD) .pdf
	• Supply Voltage - 24 VDC Nominal (15 to 28 VDC)
	• Current Scale - 4 mA at -40° F (-40° C), 20 mA at 248° F (120° C)		• 2" Round Mounting Plate (RBP1)
	• Body Housing - 304 Stainless Steel		.dwg (AutoCAD) .pdf
	• Cable - 9 ft (3 m) Purple Cable, with 2 Conductors 20 AWG
	• Operating Temperature -40° F (-40° C) to 248° F (120° C)

	ADB Temperature Sensor Approvals:
	• CSA Class II Div 1 Groups E, F & G (USA & Canada)
	• ATEX Versions Available





	Part Numbers and Accessories:
	• RB2W4LR* ~ 2" x 4" Rectangular Brass Block
	• RBID3X9 ~ 3” x 9” Stainless Steel Inspection Door
	• RBID3X6 ~ 3” x 6” Stainless Steel Inspection Door
	• RBID3X9S18 ~ Aramid Fiber 1/8” thick, 3”x9” spacer
	• RB2W4LS18 ~ Aramid Fiber 1/8” thick, 2”x4” shim
	• KIT-RUB-7 ~ 2" x 4" Brass Block & Inspection Door (Set)
	• RBH1 ~ 2” Round x 3/4“ Brass Block
	• RBP1 ~ 2” Stainless Steel Mounting Plate
	• RB2D ~ 2" Brass Block & Mounting Plate (Set)
	• RBH2 ~ 3” Round x 3/4” Brass Block
	• RB3RS18 ~ Aramid Fiber 3” round x 1/8” thick spacer
	• RB3S18 ~ Aramid Fiber 3” round x 1/8” thick shim
	• RB3D ~ 3” Round Mounting Kit
	• ADB20V3C/D2/NG ~ ADB Temperature Sensor - NTC Type
	• ADB29V3C/D2/NG ~ ADB Temperature Sensor - PT100/RTD Type
	• ADBMIL1V4C/D2/NG ~ ADB Temperature Sensor - 2" Probe
	• ADBW ~ ADB Sensor Probe Wrench
	• ADBT4 ~ ADB Sensor Tester
	• ETH-NODE1V46C ~ IE-Node (Monitoring Control Unit)
	• WDC4V46C ~ Watchdog Super Elite (Monitoring Control Unit)
	• T400N4NV46C ~ T400 Elite Hotswitch (Monitoring Control Unit)


	Literature:		Dimensions:
	• Product Datasheet		• 2 x 4 Rub Block (RB2W4LR2)
			.dwg (AutoCAD) .pdf
	Technical:
	• 4 x 2 Inspection Door Manual		• 2 x 4 Inspection Door (RBID3X9)
			.dwg (AutoCAD) .pdf
	Note: Product manuals for older part numbers can be
	found under the Technical Support area.		• 2" Round Rub Block (RB2D)
			.dwg (AutoCAD) .pdf

			• 2" Round Mounting Plate (RBP1)
			.dwg (AutoCAD) .pdf


			Inspection Door (RBID3X9) The rub block inspection door simplifies the installation process of 4 x 2 rectangular brass rub blocks. During routine maintenance inspections, the hinged design allows for easy access to inspect both the belt and the rub block for wear.









			Mounting Plate (RBP1) Designed for installing 2" round brass rub blocks. The plate mounts directly to the casing of the machine.









			ADB Temperature Sensors The sensor probes are adjustable for more accurate temperature readings. Available sensor types: NTC or PT100/RTD. More Info








			ADB Sensor Tester The ADB Sensor Tester has been designed to test 4B adjustable depth bearing (ADB) temperature sensors in the field. During planned maintenance or periodic testing, this diagnostic tool to verify the alarm and shutdown sequences of the control unit are functioning as expected. More Info


			Watchdog™ Super Elite Hazard Monitor The Watchdog™ Super Elite processes signals from sensors for belt misalignment, belt speed & slip, continuous bearing temperature, pulley misalignment and plug conditions for bucket elevators or belt conveyors. More Info









			IE-Node Hazard Monitor The Industrial Ethernet Node (IE-NODE) is a remote monitoring interface designed to provide sensor data to PLC’s or other automation and control systems. Both units can be expanded to 16 sensor inputs with the installation of optional expansion boards. More Info









			T400N Elite Hotswitch The T400N Elite Hotswitch is a microprocessor controlled temperature monitor, which works in conjunction with NTC type temperature sensors. The unit can provide an alarm and automatic shutdown, on up to 2 machines, when a hot temperature condition is detected. More Info


	What is the difference between the Touchswitch sensor and a rub block?
	The Touchswitch is a pressure sensitive contact switch. When the belt misaligns and contacts (touches) the
	sensor with enough force, an alarm is triggered.

	Rub blocks are designed to detect the heat generated by friction when the belt rubs against the brass block.

	Touchswitches provide an immediate alarm, while brass rub blocks can take longer to activate due to the time it takes
	for enough heat to build up to trigger an alarm.









Enlarge	Enlarge	Enlarge

Material Handling

Electronics

Brass Rub Blocks
Belt Misalignment Sensors

Brass rub blocks monitor for belt misalignment problems on bucket elevators and conveyors by detecting heat generated by the friction of the misaligning belt rubbing against the brass.

Features:

• Belt Misalignment Monitoring

• Easy Installation

• No Moving Parts (Solid Brass Block)

• Temperature Activated (Friction)

• External Sensor Testing (ADB Tester)

• Compatible with all the ADB temperature sensors (NTC, Pt100, 4-20 mA)

• Extensive range of models and combinations to fit any application

Material Handling

Electronics

Brass Rub Blocks Belt Misalignment Sensors

Brass rub blocks monitor for belt misalignment problems on bucket elevators and conveyors by detecting heat generated by the friction of the misaligning belt rubbing against the brass.

Features:

• Belt Misalignment Monitoring

• Easy Installation

• No Moving Parts (Solid Brass Block)

• Temperature Activated (Friction)

• External Sensor Testing (ADB Tester)

• Compatible with all the ADB temperature sensors (NTC, Pt100, 4-20 mA)

• Extensive range of models and combinations to fit any application

Brass Rub Blocks
Belt Misalignment Sensors