Rub Block Kit - for belt alignment detection

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Rub Block Kit - for belt alignment detection

Product catalog summary

Features

Belt Misalignment Monitoring: The rub block kit is designed to monitor belt misalignment in bucket elevators and conveyors.
Easy Installation: The kit is user-friendly and can be installed without difficulty.
No Moving Parts: The solid brass block ensures durability and reliability.
Temperature Activated: The system is activated by friction-induced temperature changes.
External Sensor Testing: Compatible with the ADB Tester (ADBT4) for sensor testing.

Part Numbers/Accessories

RB2W4LR2: Full kit assembly.
RB2W4LR2-BLOCK: Rectangular rub block, compatible with 1/8” NPT temp sensor ADB2 series.
RB2W4LR2-SHIM: Shim for RB2W4LR2.
RB2W4LR2-BOLTS: 1/4-20 Brass bolts for RB2W4LR2.
RB2W4LR2-SPLIT-LOCK: 1/4 SS split lock washers.
RBID3X9-DOOR: Stainless steel inspection door.
RBID3X9-GASKET: Gasket for rub block.

Applicable ADB Sensors

ADB91MV3AI/D2: 1/8" BSPT, 4-20mA, 3m cable, 50mm probe, ATEX Zone 20/IECEx/UKEx.
ADB20V3CAI/D2: 1/8" NPT, conduit entry, NTC, 3m PVC cable, 50mm probe, CSA/ATEX Zone 20/IECEx/UKEx.
ADB29V3CAI/D2: 1/8" NPT, conduit entry, PT100, 3m PVC cable, 50mm probe, CSA/ATEX Zone 20/IECEx/UKEx.
ADBMIL1V4C/D2: 1/8" NPT, conduit entry, 4-20mA, 2m cable, 50mm probe, CSA.

Application

The brass rub blocks are used to monitor belt misalignment by detecting heat from friction between the belt and the brass block.

Method of Operation

A temperature sensor within the brass block provides readings, triggering an alarm and shutdown when a critical temperature is reached. Sensors are typically installed in pairs on opposite sides of the machine and can be connected to a PLC or a central monitoring system like 4B’s T500 Elite Hotbus™, Watchdog™ Super Elite, or T400N Elite Hotswitch. Inspection doors facilitate maintenance and testing.

Catalog excerpts

Rub Block Kit - for belt alignment detection-1

Product DATASHEET Datasheet PRODUCT Rub block, Inspection Door, Gasket, Shim, Bolts and Washers. 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 T500 Elite Hotbus™, 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. Misalignment Monitoring Installation ► No Moving Parts (Solid Brass Block) ► Easy Installation ► Temperature Activated (Friction) ► External Sensor Testing with use of the ADB Tester (ADBT4) ► Easy (full kit assembly) – Rub block only, rectangular 2” W x 4” L, use with 1/8” NPT temp sensor ADB2 series. ► RB2W4LR2-SHIM - Rub Block shim for RB2W4LR2 ► RB2W4LR2-BOLTS - 1/4-20 Brass bolts for RB2W4LR2 ► RB2W4LR2-SPLIT-LOCK - 1/4 SS split lock washers ► RBID3X9-DOOR - Rub block inspection door, stainless steel ► RBID3X9-GASKET - Rub Block gasket ► RB2W4LR2-BLOCK APPLICABLE ADB SENSORS - 1/8"BSPT, 4-20mA, 3m cable, 50mm probe, ATEX Zone 20/IECEx/UKEx ► ADB20V3CAI/D2 - 1/8" NPT, conduit entry, NTC, 3m PVC cable, 50mm probe, CSA/ATEX Zone 20/IECEx/UKEx ► ADB29V3CAI/D2 - 1/8" NPT, conduit entry, PT100, 3m PVC cable, 50mm probe, CSA/ATEX Zone 20/IECEx/UKEx ► ADBMIL1V4C/D2 - 1/8" NPT, conduit entry, 4-20mA, 2m cable, 50mm probe, CSA ► ADB91MV3AI/D2 Copyright © 2024 4B Group. All rights reserved. Information is subject to change or modification without notice. Refer to instruction manual for installation information. REV09

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Rub Block Kit - for belt alignment detection-2

Product DATASHEET Datasheet PRODUCT Rub Block Kit WIRE DESCRIPTION Copyright © 2024 4B Group. All rights reserved. Information is subject to change or modification without notice. Refer to instruction manual for installation information. REV092324

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