Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Model Number	DBN51/LK11/DKWE/DKAE
Material	Stainless Steel 304/316
Coupling Type	Single/Double Diaphragm
Torque Capacity	High Torque Transmission
Misalignment Compensation	Angular, Parallel, and Axial
Operating Temperature	-50°C to +250°C
Surface Finish	Polished and Corrosion Resistant
Application Industry	Automation, Robotics, and CNC Machinery
Maintenance Requirement	Maintenance-Free Operation
Brand	Dingjian Transmission

6 reviews

Anonymous

Mar 29, 2026

Rating: 4/5

Solid industrial component

Very well made. The only reason for 4 stars instead of 5 is that the installation instructions could be more detailed regarding torque specs for the specific bore size. Otherwise, it works great.

Anonymous

Mar 29, 2026

Rating: 5/5

Precise and durable

Bought the double diaphragm version for extra flexibility. It absorbs shock loads very effectively, protecting our servo motors. Delivery was fast and packaging was secure.

Anonymous

Mar 22, 2026

Rating: 5/5

Excellent corrosion resistance

Used in a slightly humid environment where other couplings rusted quickly. The stainless steel construction of this Dingjian model is top-notch. No corrosion visible yet.

Anonymous

Mar 16, 2026

Rating: 5/5

Reliable under heavy load

Running these in a packaging line that operates 24/7. They have held up perfectly under continuous high-torque loads. No signs of wear after three months of operation.

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect for high-speed applications

We installed these couplings on our new CNC spindle motors. The vibration dampening is excellent, and the stainless steel build quality feels very robust. Zero backlash observed so far.

Anonymous

Mar 12, 2026

Rating: 5/5

Great misalignment tolerance

Our setup had slight parallel misalignment issues with previous rigid couplings. This diaphragm coupling handled it smoothly without overheating. Highly recommended for precision machinery.

5 FAQ

Q: Can I customize the bore diameter for my shaft?

A: Yes, we offer re-boring services. Please contact our sales team with your required shaft diameters before placing your order.

Q: Does this coupling require lubrication during operation?

A: No, the DBN51/LK11 series features a maintenance-free design with metal diaphragms that do not require any lubrication.

Q: What is the maximum angular misalignment this model can handle?

A: Depending on the specific bore size and series variant, it typically accommodates up to 1.5 degrees of angular misalignment. Please refer to the technical datasheet for your specific size.

Q: What is the lead time for bulk orders?

A: Standard models are usually in stock and ship within 2-3 business days. Bulk or customized orders typically take 10-15 business days depending on quantity.

Q: Is this suitable for use in food processing equipment?

A: Yes, since it is made from Stainless Steel 304/316 and requires no lubrication, it is highly suitable for food grade applications where hygiene is critical.

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