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HQTH Series Elastic Couplings

Applications: Widely used in engineering and construction machinery for connecting diesel engines to hydraulic pumps, including excavators, cranes, concrete pump trucks, loaders, motor graders, road rollers, pavers, and milling machines.

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Technical Documentation

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Product Details

Technical Specifications

Connection method

It employs polyester-based polymeric materials, exhibiting excellent high-temperature resistance and good oil resistance.
The permissible ambient temperature range is −40°C to 120°C.
The product features a compact design, easy installation and maintenance, and exceptional cost-effectiveness.
It can operate at higher rotational speeds, exhibits strong shock‑absorption and vibration‑damping capabilities, and effectively regulates the torsional vibration characteristics of the drive system, thereby reducing vibration and noise.
It can be specially designed according to the specific coupling method and dimensions of the main and auxiliary machines.

Application

It is widely used in engineering and construction machinery for connecting diesel engines to hydraulic pumps, such as excavators, cranes, concrete pump trucks, loaders, motor graders, road rollers, pavers, and milling machines.

Model number	Rated torque	Maximum torque	Allowable variable torque	Allowable Power loss	Permissible rotational speed	Permissible axial displacement	Permissible radial displacement	Allowable Angular deviation	Dynamic ① Torsional Stiffness
Model number	TKN30 (kNm)	Tkmax (kNm)	Tkw (kNm)	Pkv30 (W)	nkmax (r/min)	△ka (mm)	△kr (mm)	△kw (°)	CTdyn (kNm/rad)
HQTH400	0.4	0.8	0.1	113	5000	3	0.4	0.5	42
HQTH500	0.5	1.4	0.125	166	4000	3	0.4	0.5	55
HQTH600	0.6	1.2	0.15	170	4000	3	0.4	0.5	105
HQTH800	0.8	2.0	0.2	175	4000	3	0.4	0.5	150
HQTH1000	1.0	2.2	0.25	178	4000	3	0.4	0.5	190
HQTH1200	1.2	2.5	0.3	180	4000	3	0.4	0.5	260
HQTH1600	1.6	4.0	0.4	192	3600	3	0.4	0.5	270
HQTH2000	2.0	4.0	0.5	226	3600	3	0.4	0.5	450

①. Due to the physical properties of the elastic element, the CTdyn values listed in the table may vary by ±20%. The technical parameters in the table can be optimized upon customer request.

Basic Structural Dimensions and Parameters

Model number	TKN (kNm)	Dimensions (mm)
Model number	TKN (kNm)	D1	D2	D3	D4	D5	L1	L2	n-M1X	n1-d1	M2X
HQTH400	0.4	170	140	104	15–56	85	45		3-M14x40	3-5th place	M14×20
HQTH500	0.5	205	165	125	20~65	100	58	35	3-M16x50	3-φ5	M16×20
HQTH600	0.6	175	140	104	15~56	85	50		4-M16x45	4-φ5	M16x20
HQTH800	0.8	205	165	125	20~65	100	58	35	4-M16x50	4-φ5	M16x20
HQTH1000	1.0	215	165	125	20~65	100	56	35	4-M16x50	4-95	M16x20
HQTH1200	1.2	225	180	145	20~63	100	56	35	4-M18x60	4-φ5	M18×20
HQTH1600	1.6	270	215	165	30–85	125	58	33	4-M20×50	4-Φ8	M20×25
HQTH2000	2.0	270	215	165	30~85	125	59	37	4-M20x60	4-φ8	M20×25