Cold Rolling Mandrel Extruder Screw Shaft

• Customization: Available
• After-sales Service: Engineers Available to Service 24/7 Online
• Warranty: 6months
• Model NO.: SWR
• Standard: DIN, GB
• Transport Package: Standard Export Packaging
• Specification: Variable
• Trademark: SUPERIOR
• Origin: China
• HS Code: 8477900000
• Production Capacity: 1000pieces/Year
• Package Size: 150.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 30.000kg

Product Description

Shafts
 

1.We have two main kinds of shafts to meet customers' different demands:
Traditional Spline Milling Shaft 
Cold rolling Shaft

2.Range of work:
Length: within 15000mm

3.Keyslot Types:
Single keyway                                           Square keyslot 
High torque key button                              Dual keyslot
 Involute inner spline                                 Round keyslot
Rectangle spline                                       Client's requirements available

 

Type	Contrast Content
	Machining Accuracy	Surface Finish	Mechanical Property	Spline Strength	Torque Force	Price
Cold Rolling Shaft	*****	*****	****	****	****	*******
Traditional Spline Milling Shaft	***	***	***	***	***	***

Materials
There are different materials for different demands. 
- Imported material(Made in Japan or Germany)
- Domestic material 
-WR series material
(WR6/WR8/WR9/WR10/WR12/WR15A/WR15E/WR30)



Advantages of cold rolling mandrel compared with traditional Spline Milling
Cold extrusion spline processing:
Replacing traditional mechanical cutting methods with advanced cold extrusion technology is a qualitative leap in the spline machining process. It not only improves the machining accuracy and surface finish, but also greatly improves the mechanical properties of the parts. The cold work hardening of the metal after cold extrusion and the formation of a reasonable fiber streamline distribution inside the part make the spline strength much higher than that processed by mechanical cutting. Through the test, the mandrel processed by the process has a load-bearing torque of 25-30%, and the accuracy is improved by two levels, achieving the national standard six-level accuracy. In addition, a reasonable cold extrusion process can form compressive stress on the surface of the part to improve fatigue strength.

Comparison table 2--Torque of Spline Shaft
Type	Middle diameter of spline	Torque of spline shaft (N*m)
		WR12 HRC38 ~42	WR15A HRC38-42	WR15E HRC38-42	40CrNiMoa HRC28 ~32	40CrNiMoa HRC32 ~35	40CrNiMoa HRC3S-42
20	10.5	75	74	83	44	63	70
30	16	267	261	295	157	224	275
35	18	380	371	421	223	318	392
40	20	521	509	577	306	437	537
50	24	900	880	997	528	754	929
52	27	1282	1253	1420	752	1074	1322
60	33	2340	2287	2592	1374	1961	2414
65	33	2340	2287	2592	1374	1961	2414
75	39	3863	3775	4279	2268	3237	3985
85	44	5548	5421	6144	3257	4648	5722
95	52	9157	8948	10142	5375	7672	9445

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