---
product_id: 93864356
title: "Ruland PCR18-8-4-A Clamping Beam Coupling, Polished Aluminum, Inch, 1/2\" Bore A Diameter, 1/4\" Bore B Diameter, 1-1/8\" OD, 1-1/2\" Length, 34 lb-in Nominal Torque"
brand: "ruland"
price: "3543977₫"
currency: VND
in_stock: true
category: "BISS"
url: https://www.desertcart.vn/products/93864356-ruland-pcr18-8-4-a-clamping-beam-coupling-polished-aluminum
store_origin: VN
region: Vietnam
---

# Ruland PCR18-8-4-A Clamping Beam Coupling, Polished Aluminum, Inch, 1/2" Bore A Diameter, 1/4" Bore B Diameter, 1-1/8" OD, 1-1/2" Length, 34 lb-in Nominal Torque

**Brand:** ruland
**Price:** 3543977₫
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Ruland PCR18-8-4-A Clamping Beam Coupling, Polished Aluminum, Inch, 1/2" Bore A Diameter, 1/4" Bore B Diameter, 1-1/8" OD, 1-1/2" Length, 34 lb-in Nominal Torque by ruland
- **How much does it cost?** 3543977₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/93864356-ruland-pcr18-8-4-a-clamping-beam-coupling-polished-aluminum)

## Best For

- ruland enthusiasts

## Why This Product

- Trusted ruland brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Material Type:Aluminum




























Flexible 4-Beam Couplings Zero backlash multiple cut design Max. angular misalignment: 3° Max. rpm: 6000 Max. temp.: 225°F (107°C) Bright finish Flexible couplings offer good torsional stiffness and shock absorption. Machined from a single piece of 7075 aluminum. Connect delicate components such as encoders and tachometers. Small bearings make low radial forces. Note: For dynamic torque rating, static torque rating should be divided by 2 for nonreversing, and by 4 for reversing applications. This listing is for each. Technical Specification Item - Motion Control Couplings Motion Control Coupling Shaft Locking Type - Couplings 1 Piece Clamp Bore Dia. 1/2 x 1/4 Rated Torque 34 in.-lb. Max. RPM 6000 Outside Dia. 1.125 Overall Length 31.8mm Material - Couplings Aluminum Clearance Dia. (mm) 28.6 Length through Bore 0.75 Screw Type Cap Screw Screw Size M4 Torsional Stiffness (Deg./In.-Lbs.) 0.22 Max. Angular Misalignment 3 Degrees Max. Parallel Misalignment (In.) 0.015 Max. Axial Misalignment (In.) +/-0.01 Max. Temp. 225 Degrees F Finish Bright Compliance and Restrictions WARNING Cancer and Reproductive Harm -

## Features

- Four beam couplings have higher torque and torsional stiffness than commodity style single beam couplings and are ideal for encoder, tachometer, and other light duty applications.
- Smaller bodies than six beam couplings allow them to fit in confined spaces.
- Zero-backlash and a balanced design for reduced vibration at speeds up to 6,000 RPM.
- Manufactured from 7075 aluminum for light weight and low inertia.
- Hardware exceeds DIN 912 12.9 standards for maximum torque capabilities. Ruland beam couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant.

## Images

![Ruland PCR18-8-4-A Clamping Beam Coupling, Polished Aluminum, Inch, 1/2" Bore A Diameter, 1/4" Bore B Diameter, 1-1/8" OD, 1-1/2" Length, 34 lb-in Nominal Torque - Image 1](https://m.media-amazon.com/images/I/41LS37M3egL.jpg)
![Ruland PCR18-8-4-A Clamping Beam Coupling, Polished Aluminum, Inch, 1/2" Bore A Diameter, 1/4" Bore B Diameter, 1-1/8" OD, 1-1/2" Length, 34 lb-in Nominal Torque - Image 2](https://m.media-amazon.com/images/I/51s4TvFJd0L.jpg)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-06-03*