1-1/8 Solid Shaft Coupler by SpinCo – Keyed Set Screw, Mild Steel

Description

Product Overview

The 1-1/8″ solid shaft coupler from SpinCo is engineered to provide a robust, keyed connection that ensures precise torque transfer between rotating shafts. Constructed from C1018 mild steel, the coupler is finished with a durable black oxide coating that offers resistance to corrosion, wear, and harsh industrial environments. Its dimensions—1-1/8″ bore, 2″ outer diameter, and a total length of 4-1/2″—make it a compact yet powerful solution for a wide range of power transmission applications. The integrated 1/4″ x 1/8″ keyway and set screws positioned 7/8″ from each end secure the coupling firmly, eliminating slippage and maintaining alignment under load. This design balances strength and ease of installation, allowing technicians to achieve a reliable connection with minimal effort.

Usage

Designed for demanding industrial settings, this rigid set screw coupler excels in applications such as pumps, gearboxes, conveyors, and other machinery that require consistent power transmission. Its compact form factor enables installation in confined spaces where larger couplings would be impractical. The coupler’s mild steel construction can handle moderate torque levels, making it suitable for medium-duty equipment in manufacturing plants, material handling systems, and processing lines. The black oxide finish further extends service life in environments with exposure to moisture, chemicals, or abrasive particles, ensuring reliable performance over extended periods.

Why Choose Us

SpinCo is a trusted name in power transmission components, known for delivering high‑quality products that meet rigorous industry standards. This coupler benefits from precise machining tolerances that guarantee a perfect fit with standard shafts, reducing the risk of misalignment and premature wear. Our quality assurance process includes thorough testing for torque capacity, material hardness, and finish durability, providing confidence that each unit performs as specified. Additionally, SpinCo offers responsive technical support and a straightforward return policy, ensuring that customers receive the assistance they need throughout the product lifecycle.

Key Features

• Secure keyed connection with set screws for reliable torque transfer.
• Durable C1018 mild steel construction with black oxide finish resists corrosion.
• Compact 4-1/2″ length and 2″ outer diameter fit tight installation spaces.
• Easy installation with standard 1/4″ x 1/8″ keyway and clear set‑screw locations.
• Backed by SpinCo’s technical support and hassle‑free return policy.

FAQ

What shaft sizes are compatible with this coupler?

The coupler is designed for a 1-1/8″ bore, fitting shafts with a diameter of 1-1/8″ (28 mm). It works with standard shafts that match this size, ensuring a snug fit without additional machining.

Can this coupler handle high torque applications?

While the coupler is built from C1018 mild steel and is ideal for medium‑duty applications, it is not intended for extreme high‑torque scenarios. For heavy‑load requirements, a higher‑strength alloy or a different coupling type should be considered.

How do I install the set screws correctly?

Position the key in the 1/4″ × 1/8″ keyway, align the shafts, and then tighten the set screws evenly on both sides of the coupler. The set screws are located 7/8″ from each end, providing balanced clamping force that prevents slippage.

Is the black oxide finish suitable for outdoor use?

Yes, the black oxide coating offers good resistance to moisture and mild chemicals, making the coupler suitable for outdoor or damp environments. However, for highly corrosive conditions, additional protective measures such as sealing or painting may be advisable.

What warranty does SpinCo provide for this coupler?

SpinCo offers a one‑year limited warranty covering material defects and workmanship. If you encounter any issues within this period, contact our support team for a replacement or repair solution.