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KI Pumps & Systems, Inc.  |  SKU: 812452

812452 Gear Reducer SK871.1Z 3.88:1, 250TC

$ 2,709.00 $ 3,010.00

812452 Gear Reducer SK871.1Z 3.88:1, 250TC Ships in 1-2 Weeks or Special Order

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We ship in stock items same day. If it needs to be ordered we will ship it out to you the day it arrives.

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Description

Product Identity

The 812452 Gear Reducer SK871.1Z 3.88:1, 250TC is a mechanical gear reducer designed for precise power transmission in pump systems. Manufactured by Blackmer, it is engineered to provide reliable torque reduction and speed control, making it suitable for a variety of industrial applications.

Materials and Construction

This gear reducer features a durable housing constructed from cast iron, offering high resistance to corrosion and mechanical wear. The internal gears are made of hardened steel to ensure longevity and minimal gear backlash. The unit includes a sealed lubrication system with oil-filled housing, along with corrosion-resistant seals to protect internal components from environmental factors.

Dimensions and Compatibility

The gear reducer has an input flange compatible with 250TC motor frames, with a shaft diameter of approximately 1.125 inches (28.58 mm). The reduction ratio is 3.88:1, with an overall length of approximately 8.5 inches (215 mm) and a width of 4.5 inches (114 mm). It weighs roughly 25 kilograms (55 pounds), designed to accommodate standard pump mounting patterns and shaft alignments.

Features

  • Reduction ratio of 3.88:1 for controlled speed and torque
  • 250TC motor flange interface for easy coupling with standard motors
  • Hardened steel internal gears for durability and long service life
  • Cast iron housing with corrosion-resistant coating
  • Sealed lubrication system for maintenance-free operation
  • Overall dimensions suitable for compact installations
  • Compatible with both positive displacement and sliding vane pump applications
  • Designed for continuous operation in demanding environments

Use Cases and Ideal Applications

The 812452 Gear Reducer is ideal for pump operations where precise speed control and reliable torque transfer are required. It is best suited for use in chemical processing, water treatment, and industrial fluid transfer systems. The gear reducer is particularly effective for pump setups where budget-conscious yet durable components are needed, offering efficient power transmission without oversizing the system.

Included Items and Exclusions

The package includes the gear reducer unit, mounting hardware, and sealing components. No additional motors or coupling devices are included; these must be purchased separately to complete installation.

Care and Maintenance

The 812452 Gear Reducer requires periodic oil level checks and lubrication according to manufacturer specifications. It is recommended to perform routine inspections for lubrication leaks and corrosion. The unit is designed for maintenance-free operation but should be inspected annually for wear or damage. No warranty information is provided; refer to manufacturer guidelines for detailed care procedures.

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Frequently Asked Questions

What are the main benefits of using the 812452 SK871.1Z gear reducer by Blackmer?
The 812452 SK871.1Z gear reducer enhances pump performance by optimizing speed and torque, ensuring smooth and efficient power transmission for positive displacement and sliding vane pumps. Its robust construction offers reliability and long service life, even in demanding environments.
How do I ensure proper installation of the 812452 SK871.1Z gear reducer?
To ensure proper installation, verify compatibility with your motor and pump, including the 250TC frame, shaft diameters, keyways, and mounting pattern. Properly align the components, use a rigid base and tensioned coupling or belt drive, and follow the manufacturer's lubrication and assembly instructions.
What maintenance is required for the 812452 SK871.1Z gear reducer to ensure longevity?
Regular maintenance includes checking and maintaining the correct oil level, ensuring seals and breather are in place, and inspecting fasteners and alignment after initial run-in. Proper lubrication and periodic rechecks help maximize the gear reducer’s performance and service life.
Is the 812452 SK871.1Z gear reducer compatible with different pump types?
Yes, the 812452 SK871.1Z gear reducer is designed for positive displacement and sliding vane pump applications, providing controlled output speed and torque for these types of pumps, making it versatile for various pumping systems.
Where can I purchase the 812452 SK871.1Z gear reducer and who supplies it?
The 812452 SK871.1Z gear reducer is available for order through authorized distributors and suppliers like KI Pumps of Waukesha, WI, a leading provider of pumps and pump components worldwide.
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