Master Links

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Material: alloy steel integral forging or welding
Classification: long ring, pear shape ring, round ring, composite ring, chain link ring
Safety factor: 4 times
Surface: red painting

Seamless master link Welded master link Pear-shaped master link Seamless master rings Master link sub-assemblies Coupling links

Technical Parameters:

1.Seamless master link

ltem No	SWL (t)	dimensions (mm)			Weight Each (kg)
ltem No	SWL (t)	d	B	A	Weight Each (kg)
TH2101	2t	φ22	90	140	1.7
TH2102	3t	φ26	100	160	2.6
TH2103	5t	φ32	110	190	4.6
TH2104	8t	φ36	120	200	6.2
TH2105	10t	φ40	140	260	9.5
TH2106	16t	φ42	140	260	10.6
TH2107	20t	φ45	160	300	13.8
TH2108	32t	φ50	180	370	20.4
TH2109	40t	φ55	180	390	25.9
TH2110	60t	φ60	220	390	32.4
TH2111	80t	φ70	240	420	48.4

2. Welded master link

ltem No	SWL (t)	dimensions (mm)			Weight Each (kg)
ltem No	SWL (t)	d	B	A	Weight Each (kg)
TH2121	2T	φ25	80	160	2.3
TH2122	3T	φ28	80	160	2.9
TH2123	5T	φ32	100	180	4.3
TH2124	8T	φ36	130	220	6.7
TH2125	10T	φ40	130	220	8.4
TH2126	16T	φ42	150	280	11.3
TH2127	20T	φ45	150	280	13.1
TH2128	32T	φ50	180	350	19.7
TH2129	40T	φ55	180	350	24.1
TH2130	60T	φ65	200	400	39.2
TH2131	80T	φ75	200	400	57.8

3. Pear-shaped master link

ltem No	SWL (t)	dimensions (mm)				Weight Each (kg)
ltem No	SWL (t)	d	A	R1	R2	Weight Each (kg)
TH2141	2t	φ25	120	15	35	1.8
TH2142	3t	φ28	140	20	45	2.6
TH2143	5t	φ32	160	25	60	4.1
TH2144	8t	φ36	175	25	60	5.5
TH2145	10t	φ40	220	30	65	8.2
TH2146	16t	φ42	220	35	80	9.5
TH2147	20t	φ45	300	40	85	13.4
TH2148	32t	φ50	300	40	85	16.9
TH2149	40t	φ55	300	45	100	22.8

4. Seamless master rings

ltem No	SWL (t)	dimensions (mm)		Weight Each (kg)
ltem No	SWL (t)	d	A	Weight Each (kg)
TH2161	2t	φ22	120	1.7
TH2162	3t	φ26	140	2.6
TH2163	5t	φ32	160	4.6
TH2164	8t	φ36	175	6.4
TH2165	10t	φ40	220	9.7
TH2166	16t	φ42	220	10.7
TH2167	20t	φ45	250	13.9
TH2168	32t	φ50	300	20.3
TH2169	40t	φ55	330	27.0
TH2170	60t	φ60	330	32.6
TH2171	80t	φ70	360	49.0

5. Master link sub-assemblies

ltem No	SWL (t)	Dimensions (mm)
ltem No	SWL (t)	A	B	d	A1	B1	d1
TH2201	2t	140	80	25	60	32	14
TH2202	3t	160	80	28	65	36	16
TH2203	5t	180	100	32	80	45	18
TH2204	10t	220	130	40	100	55	22
TH2205	20t	280	150	45	110	65	28
TH2206	32t	350	180	50	120	70	35
TH2207	40t	350	180	50	140	80	40

6. Coupling links

ltem No	Nominal (in)	SWL		Dimensions (mm)				Chain Diameter (mm)
ltem No	Nominal (in)	(t)	(Lbs)	A	B	D	E	Chain Diameter (mm)
TH2221	1/4	1.5	3 ， 500	9	48	20	16	φ8-10
TH2222	5/16	2	4,500	10	54	22	17.5	φ10-12
TH2223	3/8	3.2	7,100	13	63	26	22	φ12-14
TH2224	1/2	5.4	12 ，	16	87	36	29	φ14-16
TH2225	5/8	8.2	18,100	19	105	44	36	φ18-20
TH2226	3/4	12.5	28,300	24	120	52	41	φ22-24
TH2227	7/8	15	34,200	27	140	58	51	φ25-28
TH2228	1	21	47,700	31	152	63	57	φ30-36
TH2229	1 1/4	32	72,300	38	188	77	65	φ38-45

Standards for Discarding:
There are obvious permanent deformations.
The sectional wear volume of body is more than 10% of the original size.
Any crack appears on the shackle body.
It fails the tensile testing.

Production Process:
Round billet inspection---cutting---Die forging（welding）---heat treatment---grinding shot blasting ---machining--- assembly---tensile testing---surface coating ---storage

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