Equipment Introduction 1. A method of reciprocating motion driven by a chain or oil cylinder, in which the mobile car locks the head of the pipe or bar material to be processed using a fixture with locking and releasing functions, and performs linear drawing motion. The processed pipe or bar material is reduced in outer diameter through a mold, and the pipe material is reduced in wall thickness through an internal mold to meet the process requirements. The chain cold drawing machine consists of a main motor, reducer, trolley bed, drawing trolley, core rod bed, loading rack, unloading rack, lubrication system, electrical control system, etc. The hydraulic cold drawing machine consists of a hydraulic station, hydraulic cylinder, trolley bed, drawing trolley, core rod bed, loading rack, unloading rack, lubrication system, electrical control system, etc. The advantages of the chain cold drawing machine are fast speed and long stroke, and it is usually used in factories with high production requirements and long products. The advantages of the hydraulic cold drawing machine are smooth movement and low noise, and it is usually used for products with high precision requirements. 2. According to the driving mode, cold drawing machines are divided into two types: chain cold drawing machines and hydraulic cold drawing machines. According to their functions, cold drawing machines are further divided into reducing diameter and reducing wall cold drawing machines and expanding hole cold drawing machines. According to their motion trajectory, cold drawing machines are further divided into linear cold drawing machines and disc cold drawing machines.

Tonnage (T)	Maximum Drawing Force (KN)	Maximum Outer Diameter (mm)	Effective Stroke (mm)
10	100	38	Hydraulic 10m, Chain 100m
20	200	48	Hydraulic 10m, Chain 100m
30	300	89	Hydraulic 12m, Chain 100m
50	500	114	Hydraulic 12m, Chain 80m
80	800	168	Hydraulic 12m, Chain 24m
100	1000	219	Hydraulic 12m, Chain 24m
120	1200	273	Hydraulic 12m, Chain 24m
200	2000	325	Hydraulic 12m, Chain 24m
300	3000	350	Hydraulic 12m, Chain 24m
500	5000	426	Hydraulic 12m, Chain 24m
630	6300	530	Hydraulic 12m, Chain 24m
1000	10000	630	Hydraulic 12m, Chain 24m
1500	15000	710	Hydraulic 12m, Chain 24m
2000	20000	900	Hydraulic 12m, Chain 24m

Note: the chain drawing machine has no definite drawing length limit, and the drawing force is mainly determined according to the customer’s product.