ABB 3AFP 9874578 Bearing Pad Kit Non-Drive End Positions 11 and 13 for AMG 1120LS08 LSE Generator

ABB 3AFP 9874578 bearing pad kit, specifically designed for ABB AMG 1120LS08 LSE series medium and high voltage generators, for sliding bearing pad replacement at non-drive end (NDE) positions 11 and 13, includes complete bearing pad components, manufactured with high-quality bearing alloy material, featuring excellent load capacity, anti-friction performance and heat resistance, ensuring stable support and reliable operation of the generator rotor, dedicated bearing spare part kit for periodic

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Product Details

I. Product Overview

The ABB 3AFP 9874578 is a bearing pad kit manufactured by ABB, specifically designed for the ABB AMG 1120LS08 LSE series medium and high voltage generators, for sliding bearing pad replacement at the generator non-drive end (NDE) positions 11 and 13. This kit includes complete bearing pad components required for non-drive end positions 11 and 13, serving as a dedicated bearing spare part for periodic generator maintenance and major overhaul.

The ABB AMG series medium and high voltage generators (AMG COMPACT) feature modular end-shield bearing design, covering frame sizes 0710, 0900, 1120, etc., with maximum output power up to 20MVA, widely used in electric utilities, decentralized power plants, district heating, industrial captive power plants, marine electric propulsion and other fields. The AMG 1120LS08 LSE is a medium and high voltage generator with frame size 1120, featuring sliding bearing (bearing pad) design, asymmetric cooling system with a radial fan at the drive end, delivering stable and reliable performance.

Bearing pads are the core components of sliding bearings, directly contacting the rotating journal, carrying the radial load of the rotor, achieving friction reduction and support through lubricating oil film. Bearing pads typically adopt a steel backing + bearing alloy (Babbitt metal/white metal) coating structure, featuring excellent load capacity, anti-friction performance, embeddability and conformability. During long-term generator operation, bearing pads may experience alloy layer damage or increased clearance due to wear, fatigue, overheating, poor lubrication and other factors, requiring replacement during periodic maintenance or major overhaul. The 3AFP 9874578 kit includes complete bearing pad components required for non-drive end positions 11 and 13, manufactured with high-quality bearing alloy material, precise dimensions, easy installation, ensuring stable support and reliable operation of the generator rotor after replacement.

II. Specifications

表格

Parameter	Value
Brand	ABB
Part Number	3AFP 9874578
Product Type	Bearing Pad Kit
Applicable End	Non-Drive End (NDE)
Included Positions	Position 11, Position 13
Compatible Generator Model	AMG 1120LS08 LSE
Compatible Generator Series	AMG Series Medium and High Voltage Generators
Frame Size	1120
Bearing Type	Sliding Bearing (Bearing Pad)
Kit Contents	Non-drive end positions 11 and 13 bearing pad components
Bearing Pad Material	Steel backing + bearing alloy coating
Bearing Alloy Type	Contact via email for confirmation
Bearing Pad Inner Diameter	Contact via email for confirmation
Bearing Pad Outer Diameter	Contact via email for confirmation
Bearing Pad Width	Contact via email for confirmation
Bearing Clearance	Contact via email for confirmation
Load Capacity	Contact via email for confirmation
Maximum Operating Temperature	Contact via email for confirmation
Lubrication Method	Pressure lubrication/oil ring lubrication
Mounting	Insert into bearing housing
Applicable Standards	Complies with ABB rotating machine related technical standards
Dimensions	Contact via email for confirmation
Weight	Contact via email for confirmation
Country of Origin	Contact via email for confirmation

III. Product Features

ABB original quality, specifically designed for AMG 1120LS08 LSE generator, perfect match
Includes complete bearing pad components required for non-drive end positions 11 and 13, complete kit
Steel backing + bearing alloy coating structure, high load capacity, excellent anti-friction performance
High-quality bearing alloy material, good embeddability, conformability and fatigue resistance
Precise dimensions, perfect fit with journal and bearing housing, easy installation
Effectively supports generator rotor, ensuring stable rotor operation
Achieves friction reduction through lubricating oil film, low friction coefficient, high operating efficiency
Adapts to high-speed rotating conditions, good heat resistance, reliable operation
Dedicated bearing spare part for periodic generator maintenance and major overhaul
Restores original bearing performance after replacement, extending generator service life
ABB quality assurance, reliable performance, safe and durable

IV. Typical Applications

AMG 1120LS08 LSE generator periodic maintenance
Generator non-drive end bearing pad replacement
Generator inspection and major overhaul
Generator sliding bearing maintenance
Generator rotor support system maintenance
Power plant generator set preventive maintenance
Marine electric propulsion system generator maintenance
Industrial captive power plant generator overhaul
District heating power plant generator maintenance
Decentralized power plant generator major overhaul

V. Model Description

3AFP 9874578 is the complete part number for the ABB bearing pad kit. Where:

3AFP: ABB rotating machine spare part number prefix
9874578: Specific part number
Bearing Pad Kit: Product type description
Non-Drive End (NDE): Applicable shaft end
Positions 11 and 13: Mounting positions included in the kit
AMG 1120LS08 LSE: Compatible generator model

ABB provides complete bearing spare parts and maintenance kits for the AMG series generators, including drive end and non-drive end bearing pads, bearing housings, oil seals, labyrinth seals, lubrication system components, etc., to support full lifecycle maintenance of generators. Generators with different frame sizes and configurations use different bearing spare part numbers, and matching spare parts must be selected based on the specific generator model, shaft end (drive end/non-drive end) and mounting position.

To confirm the detailed content list, bearing pad dimensional parameters (inner diameter, outer diameter, width), bearing alloy material, bearing clearance requirements, installation guide, replacement cycle and compatibility information for this kit, please contact via email for confirmation. We will provide detailed technical documentation and technical support.

VI. Why Choose Us

Professional channel supply, comprehensive model coverage across multiple brands of industrial spare parts
Strict quality inspection process ensuring reliable product quality
Professional engineering team providing technical support and selection consultation
Quick response, efficient logistics, orders accepted
Quality assurance, worry-free after-sales service

VII. FAQ

Q1: Which end of the generator is the 3AFP 9874578 bearing pad kit compatible with?

A: This bearing pad kit is specifically designed for the non-drive end (NDE) of the ABB AMG 1120LS08 LSE series medium and high voltage generators, including bearing pad components required for positions 11 and 13, for sliding bearing pad replacement at the non-drive end.

Q2: What is the difference between bearing pads and rolling bearings?

A: Bearing pads (sliding bearing pads) are the core components of sliding bearings, achieving non-contact (fluid lubrication) support through lubricating oil film, with high load capacity, stable operation and low noise, suitable for large high-speed rotating machinery (such as generators, steam turbines); rolling bearings achieve support through rolling elements (balls/rollers), with low friction coefficient and convenient starting, suitable for small and medium-sized motors and general machinery. The AMG 1120 series large generators adopt sliding bearing (bearing pad) design.

Q3: How often do bearing pads need to be replaced?

A: The replacement cycle of bearing pads depends on factors such as generator operating conditions, load rate, lubrication conditions, maintenance level and operating hours. It is recommended to inspect the wear condition, alloy layer status and bearing clearance of bearing pads during periodic generator maintenance, and decide whether to replace based on actual condition. It is generally recommended to replace bearing pads during generator major overhaul (typically after 40,000-60,000 operating hours or 4-6 years). Please refer to the ABB generator maintenance manual for the specific replacement cycle.

Q4: What should be noted when replacing bearing pads?

A: When replacing bearing pads, note: ①Ensure the generator is stopped, de-energized and in a safe state; ②Use bearing pads consistent with the original model; ③Inspect the journal surface condition, and address any scratches or wear simultaneously; ④Adjust bearing clearance strictly according to ABB technical requirements; ⑤Ensure the lubrication system is clean and the lubricating oil quality meets requirements; ⑥Perform barring inspection and trial operation after replacement, monitoring bearing temperature and vibration. It is recommended that the replacement be performed by professional electrical/mechanical personnel.

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