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High-Torque Roller Chain Coupling Durable Steel Aluminium Construction Customizable Precision Engineering OEM Shaft Couplings

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Negotiable MOQ: 2 Pieces (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Stainless Steel
Type:
Rigid Coupling
Structure:
Flexible
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Hebei Speed Torque Transmission Technology Co., Ltd.
Verified Business License
Payment & Shipping
Payment Methods:
Port of Shipment:
tianjing
Delivery Detail:
20 days

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Material Stainless Steel
Type Rigid Coupling
Structure Flexible
Standard or Nonstandard Other
Shaft Hole Other
Bore Diameter Other
Torque Other
Speed Other
The GIICL series drum-shaped tooth coupling is a high-performance mechanical transmission component widely used in industrial drive systems. It complies with the Chinese national standard GB/T 1144-2001 (Specification for Flexible Couplings with Drum-shaped Teeth) and is designed to transmit torque while compensating for misalignments between connected shafts.
1. Structural Composition
The GIICL coupling consists of four core components, each with a specific function:


  • External Gear Sleeve: Two identical sleeves with external drum-shaped teeth (curved tooth profile). They are connected to the input and output shafts of the drive system (e.g., motor, reducer) via interference fit or keyway connection.

  • Internal Gear Ring: Two rings with internal teeth that mesh with the external gear sleeves. The internal teeth are also curved to match the drum shape of the external teeth, enabling multi-directional misalignment compensation.

  • Connecting Bolt Set: High-strength bolts (usually grade 8.8 or 10.9) that fasten the two internal gear rings together, forming a rigid connection between the input and output sides.

  • Sealing Device: Typically composed of oil seals or O-rings, installed between the external gear sleeves and internal gear rings to prevent lubricating oil leakage and block dust, moisture, or other contaminants from entering the meshing area.

2. Working Principle
The key advantage of the GIICL coupling lies in its drum-shaped tooth profile, which differs from the straight teeth of ordinary gear couplings. Here’s how it works:


  1. Torque Transmission: When the input shaft rotates, the external gear sleeve drives the internal gear ring through tooth meshing, and the internal gear ring further transmits torque to the output shaft via the connecting bolts.

  2. Misalignment Compensation: The curved tooth surface allows relative angular, radial, and axial displacements between the two shafts:

  • Angular misalignment: Compensates for up to ±1.5° (varies by model) of deviation between the shaft axes.

  • Radial misalignment: Compensates for 0.15%~0.5% of the coupling’s outer diameter (e.g., a GIICL10 coupling with an outer diameter of 340mm can compensate for radial displacement up to ~1.7mm).

  • Axial misalignment: Compensates for small axial movements (usually 3~15mm) caused by thermal expansion or installation errors.

3. Key Technical Parameters
The GIICL series is categorized by model (e.g., GIICL1 to GIICL22), with each model corresponding to specific performance indicators. Typical parameters include:


Parameter Description
Nominal Torque (Tn) The rated torque the coupling can transmit continuously (range: 450~1,600,000 N·m).
Allowable Rotational Speed (n) Maximum safe operating speed (range: 1,500~8,000 r/min, decreases with larger models).


Center Distance (L) Distance between the end faces of the two external gear sleeves (varies by model, e.g., 140mm for GIICL3, 560mm for GIICL18).
Protection Grade IP54 as standard (dust-proof and splash-proof), customizable to IP65 for harsh environments.
4. Application Scenarios
Due to its high torque capacity, strong misalignment compensation, and good reliability, the GIICL coupling is widely used in heavy-duty and medium-duty industrial fields:


  • Metallurgical Industry: Rolling mills, continuous casting machines, and sintering equipment.

  • Mining Industry: Conveyor systems, crushers, and grinding mills.

  • Heavy Machinery: Cranes, excavators, and concrete mixers.

  • Power Industry: Fans, pumps, and generator sets.

  • Chemical Industry: Agitators, compressors, and transmission systems for reaction vessels.

5. Installation & Maintenance Guidelines
To ensure long service life (usually 5~8 years under normal use), follow these guidelines:
Installation Notes

  1. Clean the shaft surfaces and coupling inner holes to remove burrs or oil stains.

  2. Ensure the coaxiality of the input and output shafts meets the coupling’s misalignment limits (use a dial indicator for calibration).

  3. Tighten the connecting bolts evenly in a crisscross pattern to the specified torque (refer to the product manual).

Maintenance Requirements

  1. Lubrication: Fill the meshing area with industrial gear oil (e.g., 220# or 320# extreme pressure gear oil) every 3~6 months; replace the oil completely once a year.

  2. Seal Inspection: Check the sealing device quarterly for leaks; replace damaged oil seals or O-rings immediately.

  3. Tooth Wear Check: Inspect the gear teeth annually for pitting, abrasion, or cracks. If the tooth thickness is reduced by more than 10%, replace the coupling.

6. Advantages & LimitationsAdvantages

  • High torque transmission efficiency (≥99.5%).

  • Strong adaptability to shaft misalignments, reducing vibration and noise in the drive system.

  • Robust structure, suitable for harsh working conditions (high temperature, dusty, or humid environments).

Limitations

  • Larger radial size compared to diaphragm couplings, requiring more installation space.

  • Higher maintenance requirements (regular lubrication and seal checks) than rigid couplings.

  • Not suitable for high-speed, light-load scenarios (e.g., precision machine tools) where diaphragm couplings are more preferred.

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Product Tags: GIICL Coupling , Drum Gear Coupling , Roller Chain Coupling

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Hebei Speed Torque Transmission Technology Co., Ltd.
Verified Business License
Year Established
2017
Factory Size
3,000-5,000 square meters
Annual Export Value
US$5 Million - US$10 Million
Total Employees
101 - 200 People
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