KC/GL Roller Chain Coupling with Guard – 45# Forged Steel, High Torque, Zero Backlash

Factory direct | Case‑hardened teeth | H7 bore | Easy installation without moving shafts

The KC/GL series is a roller chain coupling (also called chain gear coupling) with a protective guard. Made of 45# forged steel with case‑hardened teeth and high‑quality brand chain, it offers high torque transmission, zero backlash, and long service life.

✅ Simple structure – disassemble without moving connected equipment.

Key Technical Specifications

🔧 Custom bores, chain sizes, and non‑standard dimensions available – contact us with your drawing.

Product Advantages (Based on Factory Data)

Product Features

✅ 45# Forged Steel – High Strength & Stability

• Made from domestic brand steel (国内品牌厂家钢材)

• High torque capacity, stable quality

• Excellent wear resistance for long‑term industrial use

✅ Case‑Hardened Teeth + Thicker Profile

• High‑frequency quenching on tooth surfaces – increases surface hardness, reduces wear

• Thicker tooth profile compared to standard couplings – extends service life by 30%

• Maintains strength under repeated shock loads

✅ High‑Quality Brand Chain

• Domestic premium chain 

• High tensile strength, excellent power transmission efficiency

• Smooth engagement, low noise

✅ H7 Bore Precision

• Tight tolerance ensures high concentricity

• Reduces vibration at high speeds (up to 5000 rpm)

• Prevents shaft fretting

✅ Zero Backlash

• Precision fit between chain and sprocket teeth

• No power/motion loss – ideal for forward/reverse rotation applications

✅ Protective Guard Included

• Prevents debris ingress

• Retains lubrication

• Improves operator safety

✅ Easy Installation & Maintenance

• No need to move connected shafts during disassembly

• Simple bolt‑on structure

• Reduces downtime significantly

Applications

• General industrial machinery

• Conveyor systems

• Mixers & agitators

• Pumps & compressors

• Woodworking machinery

• Food processing equipment (with appropriate guard)

• Packaging machinery

• Agricultural machinery

• Any application requiring easy maintenance and moderate misalignment compensation

Why Choose Apex Coupling for KC/GL Chain Couplings?

FAQ

Q: What is the difference between KC and GL series?
A: Both are roller chain couplings. KC and GL are common model designations with minor dimensional differences. We can provide both – please specify your required shaft diameters and torque.

Q: Does the coupling come with a guard?
A: Yes. Every KC/GL coupling includes a protective guard for safety and lubrication retention.

Q: Can I disassemble the coupling without moving the motor or load?
A: Yes. The chain coupling design allows you to remove the chain and guard without shifting the connected shafts – a major maintenance advantage.

Q: What is the service life compared to standard chain couplings?
A: Thanks to thicker teeth and high‑frequency quenching, our KC/GL series offers 30% longer life than standard designs.

Q: Is there any backlash?
A: The KC/GL series is designed for zero backlash under proper chain tension. For absolute zero‑backlash applications, consider our rigid or disc couplings.

Q: What chain brand do you use?
A: We use high‑quality domestic brand chains known for high strength and excellent transmission performance. Alternative brands available on request.

Request a Quote

Send us your required bore sizes, shaft spacing, torque, and speed. We will reply within 24 hours with a quotation and dimension drawing.

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