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Overview

The drive for productivity leads to controlled start transmission systems.

Specifications

Units:
Maximum Output Torque for a Short Duration (3 sec.) 331858.0 ft-lb 450000.0 N·m Less
Maximum Input Speed (motor speed) 1,782 rpm 1,782 rpm Less
Weight (without oil) - In-line Drive System 13007.0 lb 5900.0 kg Less
Application Chain type longwall machinery like face conveyors Chain type longwall machinery like face conveyors Less
Dimensions In-line gearbox (P version) - Height 41.7 in 1060.0 mm Less
Dimensions In-line gearbox (P version) - Length (without drive connection) 66.8 in 1697.0 mm Less
Dimensions In-line gearbox (P version) - Width 44.1 in 1120.0 mm Less
Dimensions Right-/Left-angle Gearbox (KP version) - Height 41.7 in 1060.0 mm Less
Dimensions Right-/Left-angle Gearbox (KP version) - Length (without drive connection) 109.1 in 2770.0 mm Less
Dimensions Right-/Left-angle Gearbox (KP version) - Width 50.6 in 1285.0 mm Less
Maximum Installed Power - kW 1,500 rpm @ 50 Hz (hp 1,800 rpm @ 60 Hz) at: i = 33:1 - 16:1 1300.0 hp 800.0 kW Less
Maximum Installed Power - kW 1,500 rpm @ 50 Hz (hp 1,800 rpm @ 60 Hz) at: i = 39:1 1100.0 hp 700.0 kW Less
Maximum Installed Power - kW 1,500 rpm @ 50 Hz (hp 1,800 rpm @ 60 Hz) at: i = 50:1 800.0 hp 500.0 kW Less
Oil Filling Quantities - In-line Drive System 114.0 gal 430.0 L Less
Oil Filling Quantities - Right-/Left-angle Drive System 193.0 gal 730.0 L Less
Weight (without oil) - Right-/Left-angle Drive System 21500.0 lb 9700.0 kg Less

Typical Application

Description Chain Type Longwall Machinery like Armored Face Conveyors (AFC) Chain Type Longwall Machinery like Armored Face Conveyors (AFC) Less

Maximum Output Torque (for 3 sec) Tmax [N·m]

KP-45/P-45 CST 331858.0 lb ft 450000.0 N·m Less
Rated Power P @ 50 Hz (n = 1,485 rpm) - Ratio i [-]: 24.5 800 kW 800 kW Less
Rated Power P @ 50 Hz (n = 1,485 rpm) - Ratio i [-]: 28 800 kW 800 kW Less
Rated Power P @ 50 Hz (n = 1,485 rpm) - Ratio i [-]: 33 800 kW 800 kW Less
Rated Power P @ 50 Hz (n = 1,485 rpm) - Ratio i [-]: 39 700 kW 700 kW Less
Rated Power P @ 50 Hz (n = 1,485 rpm) - Ratio i [-]: 45 540 kW 540 kW Less
Rated Power P @ 50 Hz (n = 1,485 rpm) - Ratio i [-]: 50 500 kW 500 kW Less
Rated Power P @ 60 Hz (n = 1,782 rpm) - Ratio i [-]: 24.5 1,305 hp 1,305 hp Less
Rated Power P @ 60 Hz (n = 1,782 rpm) - Ratio i [-]: 28 1,305 hp 1,305 hp Less
Rated Power P @ 60 Hz (n = 1,782 rpm) - Ratio i [-]: 33 1,305 hp 1,305 hp Less
Rated Power P @ 60 Hz (n = 1,782 rpm) - Ratio i [-]: 39 1,142 hp 1,142 hp Less
Rated Power P @ 60 Hz (n = 1,782 rpm) - Ratio i [-]: 45 881 hp 881 hp Less
Rated Power P @ 60 Hz (n = 1,782 rpm) - Ratio i [-]: 50 816 hp 816 hp Less

Dimensions

KP-45 CST - Height 41.7 in 1060.0 mm Less
KP-45 CST - Length 113.2 in 2875.0 mm Less
KP-45 CST - Width 55.2 in 1401.0 mm Less
P-45 CST - Height 41.7 in 1060.0 mm Less
P-45 CST - Length 66.8 in 1697.0 mm Less
P-45 CST - Width 44.1 in 1120.0 mm Less

Requirements of Cooling Water

Maximum Water Inlet Temperature 25° C/298.15 K (77° F/298.15 K) 25° C/298.15 K (77° F/298.15 K) Less
Required Cooling Water 6.6 gal/min 25.0 L/min Less

Capacity

KP-45 CST - Gearbox Weight (without oil) 21385.0 lb 9700.0 kg Less
KP-45 CST - Oil Quantity 193.0 gal 730.0 L Less
P-45 CST - Gearbox Weight (without oil) 13007.0 lb 5900.0 kg Less
P-45 CST - Oil Quantity 114.0 gal 430.0 L Less

Shaft Design

Input Shaft (cylindrical) DIN 5480-W 120×4 DIN 5480-W 120×4 Less
Output Shaft with Internal Toothing DIN 5480-N 260×10×30×24 DIN 5480-N 260×10×30×24 Less

Startup

For soft-start and heavy-load startup, all drive motors run up to full speed at no load. Motors are always started sequentially, with the result that peak current and energy demand are very modest. When the last motor has reached full speed, pressure is applied to the CST clutch, increasing until the breakdown torque is reached if needed. As a result, the increase in pressure and motor load is synchronized during the startup phase and continues as the conveyor accelerates.


Load-sharing

Power consumption of each motor is constantly monitored to allow load-sharing between the individual drives. If a preset value is exceeded, slip at the drive with the greater power consumption is increased, causing the other drives to draw more power and equalizing power distribution again. The typical operating slip is normally below 0.2%.


Overload Protection

If the chain is jammed by large pieces of rock or trapped iron, the CST clutch is opened rapidly and the motor is switched off. To achieve this, the output speed is constantly monitored. Within milliseconds, the rotating mass of the gearbox - and particularly of the asynchronous motor - is disconnected from the conveyor chain sprocket. Communication between the drive control units allows all clutches to be opened simultaneously.


Motor Braking Feature

Occasionally - even during regular shifts - there is a need to interrupt production and shut down the AFC motors.


PMC™-D and PMC™-V

The PMC™-D and PMC™-V are members of the Cat PMC™ family of programmable mining controls. The PMC™-D controls drive applications such as face conveyors and overload protection gearboxes. The PMC™-V drives visualization.


V-Drive Visualization Software

This software visualizes all CST, tail drive and chain tensioning data. It allows changes to drive system parameters and monitors load-sharing, conveyor speed, clutch sensors, etc.


Field Experience

The CST drive system was applied for the first time in 1995 on a high production longwall face in the United States. Since then, well over 500 CST drive systems have been sold and are operating successfully in mines in the U.S., Mexico, Australia, Poland, China, Russia, Kazakhstan, the Czech Republic and Germany. The maximum total available power for the face conveyors is currently up to 3600 kW. All components - particularly the vital components within the supply unit and the CST clutch - have proven their reliability in a range of applications. The world’s highest capacity AFC (>6000 t/h) and the world’s longest AFCs in operation (nearly 500 m/1,640 ft) have been equipped with the Cat CST drive system.


ICDS - Integrated CST Drive System

The ICDS is the result of continuing cooperation between Caterpillar and Baldor Electric Company. It combines the tried-and-tested CST drive system for face conveyors with a newly developed special Baldor Electric motor with our new PMC™-D drive control system.


A Commitment to the Mining Industry

As the demand for commodities grows, mining companies need a partner to support them in their efforts. Caterpillar is committed to being that partner.

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Mining Financial Services

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