Z1 High Load Capacity Expansion Sleeve with Easy Disassembly Anti-Loosening Design and Steel Keyway-Jiangsu Rokang Heavy Industry Technology Co., Ltd.

Specification

Size(mm)	Dimensions (mm)	Rated load		Contact pressure (MPa)		Weight (Approx. kg)
Size(mm)	L1	Axial (kN)	Torque (N·m)	Shaft (MPa)	Hub (MPa)	Weight (Approx. kg)
6×9×4.5	3.7	0.83	2	116	76	0.002
7×10×4.5	3.7	0.85	3	101	67	0.002
8×11×4.5	3.7	1.22	5	125	94	0.002
9×12×4.5	3.7	1.83	8	146	101	0.002
10×13×4.5	3.7	1.83	10	130	109	0.002
12×15×4.5	3.7	1.91	11	115	90	0.002
13×16×4.5	3.7	1.96	13	107	87	0.002
14×18×6.3	5.3	3.31	23	120	94	0.002
15×19×6.3	5.3	3.34	25	113	88	0.005
16×20×6.3	5.3	3.4	28	110	89	0.006
17×21×6.3	5.3	3.59	29	102	82	0.006
18×22×6.3	5.3	3.68	33	102	82	0.007
19×24×6.3	5.3	4.96	47	133	105	0.007
20×25×6.3	5.3	5.54	55	140	109	0.009
22×26×6.3	5.3	5.88	65	132	113	0.007
24×28×6.3	5.3	5.89	73	130	110	0.008
25×30×6.3	5.3	6.02	73	117	97	0.009
28×32×6.3	5.3	6.13	85	112	97	0.010
30×35×6.3	5.3	6.14	90	99	84	0.011
32×36×6.3	5.3	7.99	127	126	112	0.011
35×40×7.0	6	9.2	166	121	107	0.016
36×42×7.0	6	9.48	166	113	98	0.019
38×44×7.0	6	9.84	186	113	98	0.021
40×45×8.0	6.6	10.8	226	113	103	0.021
42×48×8.0	6.6	11.3	226	106	91	0.026
45×52×10	8.6	16.2	364	108	98	0.045
48×55×10	8.6	24	589	160	139	0.043
50×57×10	8.6	25	608	152	131	0.045
55×62×10	8.6	25	700	146	130	0.049
56×64×12	10.4	28	810	134	118	0.070

Size(mm)	Dimensions (mm)	Rated load		Contact pressure (MPa)		Weight (Approx. kg)
Size(mm)	L1	Axial (kN)	Torque (N·m)	Shaft (MPa)	Hub (MPa)	Weight (Approx. kg)
60×68×12	10.4	28	830	120	106	0.07
63×71×12	10.4	29	880	116	102	0.08
65×73×12	10.4	30	970	117	102	0.09
70×79×14	12.2	37	1310	119	105	0.115
71×80×14	12.2	38	1390	119	109	0.11
75×84×14	12.2	39	1440	114	99	0.12
80×91×17	15	54	2160	123	103	0.21
85×96×17	15	58	2450	122	107	0.21
90×101×17	15	60	2700	119	104	0.22
95×106×17	15	61	2900	114	105	0.23
100×114×21	18.7	83	4160	119	104	0.39
110×124×21	18.7	91	5170	116	102	0.42
120×134×21	18.7	103	6000	122	107	0.46
130×158×28	25.3	145	9400	118	103	0.86
140×168×28	25.3	162	11000	122	107	0.96
150×178×28	25.3	177	13300	124	108	1
160×186×28	25.3	186	14900	122	112	1
170×191×33	30	236	20100	124	108	1.54
180×201×33	30	238	21500	121	106	1.61
190×211×33	30	258	24400	121	111	1.8
200×224×38	34.8	320	32000	122	107	2.4
210×234×38	34.8	343	36000	124	113	2.5
220×247×38	34.8	348	38000	121	111	2.6
230×254×43	39.5	388	45000	114	100	3.4
240×267×43	39.5	419	51000	120	110	3.8
250×280×43	44	425	53000	101	90	4.8
260×290×48	44	435	56500	100	89	4.9
270×300×48	44	450	61000	100	89	5
280×313×53	49	519	74700	103	92	6.4
290×323×53	49	527	75200	97	86	6.5
300×333×53	49	540	79000	95	85	6.8
320×360×65	59	740	119000	104	93	11
340×380×65	59	785	133600	104	93	11.5
360×400×65	59	810	145000	101	91	12.3
380×420×65	59	880	168500	105	95	13
400×440×65	59	887	176000	95	89	13.7
420×460×65	59	888	186000	99	86	14.1
440×480×65	59	970	213000	99	89	14.5
460×500×65	59	1040	240000	102	93	15.8
480×520×65	59	1080	261000	102	93	16
500×540×65	59	1090	270000	97	88	16.7

Describe

The Z1 High Load Capacity Expansion Sleeve is a shaft-hub locking device engineered to provide frictional torque transmission without backlash. This type of locking element eliminates the need for traditional interference fits or keyway-only connections by using mechanical expansion to achieve secure and precise torque transfer between shaft and hub components.

This Z1 model is specifically designed for high-torque and heavy-load applications, featuring easy disassembly, anti-loosening structure, and machinable steel keyways, making it suitable for OEM customization and demanding industrial use.

Key Features & Advantages
1. High Load Transmission Capacity
The Z1 expansion sleeve is designed to withstand extremely high radial and axial forces as well as torque loads, ideal for heavy-duty drive assemblies.

2. Frictional Locking with Zero Backlash
By creating strong surface pressure between the shaft and the hub, the expansion sleeve ensures uniform torque transfer without relative movement or backlash, improving mechanical stability and system longevity.

3. Easy Disassembly & Reusability
Integrated tapered ring geometry and removable fasteners allow for quick assembly and disassembly without damaging the shaft or hub—especially useful for maintenance-intensive systems.

4. Anti-Loosening Mechanical Design
Engineered with self-locking bolts, vibration-resistant geometry, and uniform stress distribution, this sleeve minimizes the risk of unintentional loosening even under shock loading or dynamic reversing torque.

5. Integrated or Optional Steel Keyway
While the sleeve itself offers reliable frictional locking, it also supports machined keyways for added safety or alignment in high-impact or critical-load systems. The keyway can be machined to customer specifications.

6. Custom Machining & OEM Support
All surfaces and inner dimensions can be custom-machined to fit specific shaft/hub tolerances, and the sleeve can be produced in accordance with client-supplied technical drawings or load calculations.

7. Corrosion Resistance & Surface Finishing
Available with black oxide coating, zinc plating, or phosphating to protect against environmental degradation and increase service life.

Typical Applications
The Z1 expansion sleeve is widely used in mechanical systems where secure, backlash-free shaft-to-hub connections are critical. Common applications include:

Industrial Gearboxes & Speed Reducers
Ensures tight and reliable gear-shaft connections with high torque output.

Heavy-Duty Conveyors & Pulley Drives
Transfers load efficiently between rotating elements without key slippage.

Wind Turbine and Energy Equipment
Used in drive systems where axial forces, reversing loads, and long-term reliability are essential.

Mining, Metallurgy, and Cement Machinery
Designed to resist heavy vibration and impact loads in material handling systems.

Rotating Equipment and Test Rigs
Allows for flexible disassembly and precise shaft alignment during frequent maintenance.
The Z1 High Load Capacity Expansion Sleeve offers a reliable, precise, and maintenance-friendly solution for high-performance shaft-to-hub connections in demanding industrial systems. With its anti-loosening structure, easy disassembly, and support for OEM machining and keyway integration, it meets the rigorous needs of modern mechanical engineering.