Z14 Ultra High Torque Transmission Expansion Sleeve with Steel Structure High Rigidity and Strong Impact Resistance

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Z14 Ultra High Torque Transmission Expansion Sleeve with Steel Structure High Rigidity and Strong Impact Resistance

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Specification
Describe

Specification

Size (mm）	Dimensions (mm)			Rated load		Contact pressure (MPa)		Tightening (N·m)	Weight (Approx. kg)
Size (mm）	L1	L2	D1	Axial (kN)	Torque (N·m)	Shaft (MPa)	Hub (MPa)	Tightening (N·m)	Weight (Approx. kg)
14×25×26	16	30	42	9.2	64	109	61	2.9	0.09
16×25×26	16	30	42	9.2	74	95	61	2.9	0.08
18×25×26	16	30	42	9.2	82	85	61	2.9	0.07
19×25×26	16	30	42	9.2	87	80	61	2.9	0.07
20×30×26	16	31	50	15	150	124	82	6	0.11
22×30×26	16	31	50	15	165	113	82	6	0.11
24×30×26	16	31	50	15	180	104	82	6	0.09
25×36×26	16	31	55	15	210	100	69	6	0.14
28×36×26	16	31	55	15	187	89	69	6	0.12
30×36×28	16	31	55	15	220	83	69	6	0.11
32×42×26	16	33	62	15	245	77	59	6	0.2
35×42×28	16	33	62	15	260	71	59	6	0.17
36×42×28	16	33	62	15	270	69	59	6	0.16
38×44×28	16	34	66	21.2	400	93	70	10	0.22
40×48×28	16	34	70	21.2	425	88	83	10	0.18
42×48×28	16	34	70	21.2	446	85	73	10	0.19
45×55×35	20	43	82	38.9	875	113	94	25	0.4
48×55×35	20	43	82	38.9	935	107	94	25	0.35
50×62×35	20	43	89	38.9	974	103	83	25	0.5
55×62×35	20	43	89	38.9	1070	94	83	25	0.41
60×72×35	20	43	99	38.9	1165	86	71	25	0.58
65×72×35	20	43	99	38.9	1265	79	71	25	0.46

Describe

The Z14 Expansion Sleeve is a robust, keyless shaft-hub connection device designed for ultra high torque transmission under demanding industrial conditions. Engineered with a precision steel structure, the Z14 offers high rigidity, superior stability, and exceptional resistance to dynamic loads and mechanical shock, making it ideal for high-performance machinery where reliability and durability are critical.

Working Principle
The Z14 operates on a radial expansion and axial compression principle. When the clamping bolts are tightened, the tapered inner and outer sleeves are pressed together, generating radial pressure. This pressure creates a high-friction interface between the shaft and the mounted component, locking them securely together. The result is a mechanically strong, slip-free connection that can handle both high torque and dynamic loading.

Structure and Materials
The Z14 expansion sleeve is composed of:
Inner and Outer Tapered Rings: Precisely machined conical surfaces that interact to produce uniform radial expansion.
Clamping Bolts: High-strength bolts that apply axial force, inducing radial pressure for torque transmission.
Alloy Steel Construction: Manufactured using high-grade alloy steel for enhanced strength, fatigue resistance, and long-term durability.
Surface Treatment: Often treated with anti-corrosion coatings and heat treatment processes to improve wear resistance and service life.
OEM customization is available to accommodate specific sizes, mounting configurations, and operating environments.

Key Features and Advantages
Ultra High Torque Capacity: Capable of transferring extremely high levels of torque with complete mechanical stability.
High Dynamic Load Resistance: Performs reliably under fluctuating loads, frequent starts and stops, and reversing operations.
Excellent Rigidity: Maintains structural integrity under continuous high-stress conditions and minimizes component deflection.
Strong Impact Resistance: Effectively absorbs and withstands shock loads in aggressive mechanical systems.
No Keyway Required: Reduces shaft weakening and enables quick, damage-free installation and removal.
Backlash-Free Operation: Ideal for high-precision and vibration-sensitive equipment.
Low Maintenance and Easy Replacement: Minimizes downtime with simple disassembly and reassembly processes.
OEM Support Available: Custom-designed variants can be provided to match project-specific torque, size, or environmental requirements.

Applications
The Z14 expansion sleeve is widely used in power-intensive and dynamically loaded applications, including:
Heavy-Duty Machinery
Metallurgy and Steel Processing
Mining and Earthmoving Equipment
Wind and Hydro Power Generation
Pulp and Paper Manufacturing Systems
Large Industrial Conveyors
Precision Automation Systems
Marine Propulsion and Drives

Company

Jiangsu Rokang Heavy Industry Technology Co., Ltd.

Jiangsu Rokang Heavy Industry Technology Co., Ltd. has fixed assets of more than 80 million yuan, and has a team of professional talents in mechanical design, precision manufacturing, heat treatment, welding, etc.; the company has a one-stop complete set of processing facilities and a series of quality inspection systems such as measurement, physical and chemical, and dynamic testing, and has a comprehensive mechanical processing capability. For many years, the company has been committed to the research and development and manufacturing of ball cage type constant velocity universal couplings, cross shaft type universal couplings, and drum gear couplings. It has carried out close industry-university-research cooperation with military and local scientific research institutes such as Jiangsu University of Science and Technology, School of Mechanical Engineering of Jiangsu University, and Power Engineering Department of PLA Naval Academy, and has continuously expanded into the fields of precision, heavy load and high speed. The products have successfully replaced foreign imported products with excellent performance, and the process technology has reached the international advanced level. It has been widely used in lifting and transportation, metallurgical machinery, metal rolling, engineering machinery, mining machinery, petrochemical, textile machinery, military ships, armored vehicles, railway locomotives, special vehicles and other fields. The product quality and service have been recognized and praised by the majority of users, and are exported to Europe, America, Russia, the Middle East, India and other countries and regions. In recent years, the company has been committed to the in-depth research and development of ball cage constant velocity universal couplings, and has successively developed ball cage constant velocity universal couplings for screw pumps, ball spline ball cage constant velocity universal couplings, coaxial double-speed, and double-way ball cage constant velocity universal couplings. It fundamentally solves the new problems that users currently encounter during use. The company has always adhered to the business purpose of "quality first, honest management, and customer first". We are willing to work with you with excellent products, preferential prices and thoughtful services to create a brilliant career!

Certificate Of Honor

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