Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Strength Steel and Black Nitrile Rubber
Type	FCL Elastic Pin Coupling (Bulge Type)
Available Sizes	F2, F3, F4, F5, F6, F7
Surface Finish	Black Oxide Coating
Application	Motor to Pump Shaft Connection
Temperature Range	-20°C to +80°C
Hardness	Shore A 90±5
Package Contents	Rubber Sleeves, Bolts, Nuts, and Washers
Torque Capacity	Varies by Size (See Specification Chart)
Origin	Manufactured in ISO 9001 Certified Facility

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Exact replacement needed

Hard to find specific F6 sizes locally. This set was exactly what we needed to get our conveyor system running again. Great product.

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect fit for our industrial pumps

Ordered the F4 size set for a replacement project. The rubber sleeves fit snugly on the pins, and the bolt quality is excellent. No vibration issues since installation.

Anonymous

Mar 18, 2026

Rating: 5/5

Excellent durability

Been running these couplings for three months now in a high-vibration environment. The rubber shows no signs of cracking or wear. Very satisfied.

Anonymous

Mar 16, 2026

Rating: 4/5

Good value for money

Solid construction and fast shipping. The black rubber seems durable. Took off one star because the packaging was slightly damaged, but the parts inside were fine.

Anonymous

Mar 13, 2026

Rating: 4/5

Sturdy bolts

The steel bolts are very strong and the threading is precise. Installation was straightforward. Would buy again for future projects.

Anonymous

Mar 04, 2026

Rating: 5/5

Reliable coupling components

We use these regularly for maintenance. The elasticity of the sleeves helps absorb minor misalignments effectively. Highly recommend for standard machinery.

5 FAQ

Q: What is the maximum RPM rating for the F5 size?

A: For the F5 size, the maximum recommended speed is typically around 4000 RPM, depending on the specific motor load and alignment.

Q: Can I mix different sizes of sleeves with these bolts?

A: It is not recommended. Each bolt length corresponds to a specific sleeve size (F2-F7) to ensure proper clamping force and safety.

Q: Do you offer bulk pricing for orders over 50 sets?

A: Yes, we offer tiered discounts for bulk purchases. Please contact our sales team directly or request a quote through the product page.

Q: Does this set include the nuts and washers or just the bolts and sleeves?

A: The set is complete and includes the rubber sleeves, bolts, nuts, and flat washers required for assembly.

Q: Are these sleeves resistant to oil and grease?

A: Yes, the black rubber sleeves are made from Nitrile (NBR) which offers good resistance to oils, greases, and fuels.

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