Heavy-Duty Clevises for Lh Series Leaf Chains in Hoisting Applications

Product Description

ISO Chain No.	ANSI Chain No.		b7	b8	b9	b10	b11 max	b12 min	b13 max	b14 max	p1 nom	d1 min	h4 min	r max
			m m	m m	m m	m m	m m	m m	m m	m m	m m	m m	m m	m m
LH2022	BL1022		-	10.26	-	-	9.48	7.35	-	-	-	11.14	15.88	15.88
LH2023	BL1023		-	15.21	-	-	14.22	7.35	-	-	-
LH2034	BL1034		5.13	10.08	24.93	-	9.48	7.35	23.86	-	14.85
LH2044	BL1044		10.26	10.26	30.06	-	9.48	7.35	28.65		19.80
LH2046	BL1046		10.26	15.21	39.96	-	14.22	7.35	38.18	-	24.75
LH2066	BL1066		10.26	10.26	30.06	49.86	9.48	7.35	28.65	47.82	19.80
LH2422	BL1222			12.05			11.16	8.66				12.74	19.05	19.05
LH2423	BL1223			17.87			16.74	8.66
LH2434	BL1234		6.02	11.84	29.31	-	11.16	8.66	28.05		17.46
LH2444	BL1244		12.05	12.05	35.33	-	11.16	8.66	33.68	-	23.28 29.10 23.28
LH2446	BL1246		12.05	17.87	46.97		16.74	8.66	44.89
LH2466	BL1266		12.05	12.05	35.33	58.61	11.16	8.66	33.68	56.20
LH2822	BL1422		-	13.76	-		12.76	9.90				14.31	22.23	22.23
LH2823	BL1423			20.41			19.13	9.90
LH2834	BL1434		6.88	13.53	33.48	-	12.76	9.90	32.04		19.95
LH2844	BL1444		13.76	13.76	40.36	-	12.76	9.90	38.47	-	26.60
LH2846	BL1446		13.76	20.41	53.66		19.13	9.90	51.28		33.25
LH2866	BL1466		13.76	13.76	40.36	66.97	12.76	9.90	38.47	64.18	26.60
LH3222	BL1622			15.65			14.53	11.28				17.49	25.40	25.40
LH3223	BL1623			23.22			21.80	11.28			22.71 30.28
LH3234	BL1634		7.82	15.40	38.11	-	14.53	11.28	36.48 43.80	-
LH3244	BL1644		15.65	15.65	45.93		14.53	11.28
LH3246	BL1646		15.65	23.22	61.07		21.80	11.28	58.38		37.85 30.28
LH3266	BL1666		15.65	15.65	45.93	76.22	14.53	11.28	43.80	73.07
LH4022	BL2022			20.53			19.19	14.86				23.83	31.75	31.75
LH4023	BL2023			30.49			28.78	14.86
LH4034	BL2034		10.27	20.23	50.11		19.19	14.86	48.11	-	29.88
LH4044	BL2044		20.53	20.53	60.37	-	19.19	14.86	57.76		39.84
LH4046	BL2046		20.53	30.49	80.30		28.78	14.86	76.99		49.80
LH4066	BL2066		20.53	20.53	60.37	100.22	19.19	14.86	57.76	96.33	39.84
Note:1-connecting	pin	2-connecting  linka
a-the connecting link should be used with a press fit outer plate

         

 

Leaf chains are a special transmission and lifting chain, composed of multiple metal plates connected by pins. With a simple structure and high strength, they are mainly used for heavy-duty lifting, traction in vertical or inclined directions, and short-distance material conveying. They are widely applied in fields such as forklifts, cranes, lifting platforms, and engineering machinery. Their design focuses on bearing axial tensile loads rather than the continuous transmission function of traditional chains, thus performing excellently in heavy-load scenarios.

Performance Characteristics

Ultra-high Load-bearing Capacity

• High-strength alloy structural steels (such as 40Cr, 65Mn) are mostly used as materials. After quenching and tempering, the tensile strength can reach 800-1200 MPa, and the rated working load of a single chain can range from several tons to hundreds of tons (depending on specifications).
• The plates' superimposed design improves their overall strength by dispersing stress, making them suitable for heavy-load scenarios such as lifting forklift masts and telescoping crane booms.

Fatigue Resistance and Wear Resistance

• The surface of the plates is polished or phosphated to reduce frictional wear with guide grooves (such as forklift mast rails); the surface of the pins is usually chrome-plated or nitrided to enhance rust resistance and anti-seizure ability.
• The optimised ratio of plate thickness to pin diameter enables adaptation to frequent starts/stops or impact loads, extending the service life.

Compact Structure and Light Weight

• Leaf chains have no redundant components compared to roller chains or lifting chains. With the same load-bearing capacity, they are smaller in size and lighter in weight, saving installation space. They are especially suitable for scenarios sensitive to the weight of equipment (such as forklifts and lifting platforms).

Easy Maintenance

• The simple structure allows for easy disassembly and inspection; daily maintenance mainly involves regularly lubricating the contact parts between pins and plates to prevent rust and jamming, resulting in low maintenance costs.

COMPANY PROFILE

Qingdao Star Machine Technology Co., Ltd. is located in the beautiful coastal city of Qingdao. We are a large enterprise group involved in research, production, marketing and technical services. We have three large production and research bases and one large marketing centre specialising in transmission parts, bearings, chains, sprockets, tractor driving axles and hydraulic steering units. Spanning 80,000 square metres, our company employs 816 people, including 167 senior professional technicians, and boasts a global network of sales and service systems. We maintain strong partnerships with several leading educational institutions, including Liaocheng University, Qingdao University, Shandong Agricultural University, Shandong University, and the Chinese Academy of Agricultural Sciences, and receive valuable technical support from industry experts.

 
 

The 219 sets of advanced automatic production equipment ensure high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customisations are also available. Our extensive global service network provides customers with prompt after-sales technical support.
We are not just a manufacturer and supplier, but also an industry consultant. We work proactively with our clients to offer expert advice and product recommendations, ensuring that we identify the most cost-effective product available for each specific application. Our client base extends globally, encompassing end users, distributors and OEMs. Our OEM replacements can be used wherever necessary and are suitable for both repair and new assemblies.

 

CERTIFICATIONS

 

1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customisation and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed Worldwide Marketing Network
7. Efficient After-Sale Service System

Q: Why should you choose us?

A: We are a manufacturer with over 20 years of experience producing chains.
B. We have a reliable quality assurance system.
C. Cutting-edge computer-controlled CNC machines.
D. Bespoke solutions from highly experienced specialists.
E. Customisation and OEM available for specific applications.
F. Extensive inventory of spare parts and accessories.
G. A well-developed worldwide marketing network.
H. Efficient after-sales service system

Q. What are your payment terms?
A: 30% TT deposit and 70% balance TT before shipping.
 
Q: Can we print our logo on your products?
A: Yes, we offer an OEM/ODM service and can customise logos, sizes, packaging, etc.
 
Q: What is your main market?
A: North America, South America, Eastern Europe, Western Europe, Southeast Asia, Africa, Oceania, the Middle East and Eastern Asia.
 
Q: Can I get samples from your factory?
A: Yes, samples can be provided.