Ningbo Supreme Machinery Co., Ltd., established in 1990, is one of the Auto Transmission Gear Shifting Fork manufacturers and suppliers in China. Auto Transmission Gear Shifting Fork is a part of vehicle transmission gear shaft. Its purpose is to slide gears into or out of engagement with other gears in order change from one gear ratio to another in a manual transmission.This image is of the throw out bearing arm not the shifting fork.
If the fork used on the machine, it is used for variable speed, mainly used in the operating mechanism. Changing the position of lathe sliding gear can realize the variable speed. Or it is applied to control the mechanism of clutch engagement and disconnect, in order to control the horizontal or vertical feed.
With Precision Lost Wax Investment Casting process, Tractor transmission shifting forks is made from carbon steel 1045 or alloy steel, this casting should be heat treatment after machining and assemble with gearbox for speed adjustment.
Material |
stainless steel: 201, 303, 304, 316, 316L, 1.4581, SCS14, SCS16 Alloy cast steel: 4140, 4150, 4340, 8620, GS-25GrMo4 Hardening stainless steel:17-4PH, 410, 420, 440C Cast alloy tool steel:CS-2, CS-7, Carbon steel:1020, 1025(WCB), 1030, 1040, 1045, 1050 |
Weight |
2g-550g |
Accuracy class |
T4-CT7 |
Surface roughness |
Up to Ra1.6~Ra6.3 |
Minimum thickness |
2mm(1mm or small area) |
Tolerance |
Outer radius≥0.3mm, inner fillet≥0.5mm |
Longest blind hole(diameter 10mm) |
30mm |
Machining |
Turning milling, drilling, boring, threading, grinding machine, CNC / NC machining and test facilities |
Heat treatment |
Anneal, quenching, normalizing. |
surface treatment |
Zinc coating, black oxide, black painting, power painting, mirror polish, satin polish etc. |
Production Process
We have updated our production line for making Auto Transmission Gear Shifting Fork.
Our production process include resin sand molding line, shell molding line, green sand casting and lost wax investment casting production process.
Machining Workshop
We have full set line of machining facilities, various CNC equipment and Machining Center can meet customers’ requirements. After machining, the casting parts will be completed. Then, they will be inspected and packed for delivery and shipment.
Quality Control
Checking the raw material after they reach our factory------- Incoming quality control
Checking the details before the production line operated
Have full inspection and routing inspection during mass production---In process quality control
Checking the goods after they are finished---- Final quality control
Checking the goods after they are finished-----Outgoing quality control
Packing and Delivery
Packaging of Auto Transmission Gear Shifting Fork can be customized based on customer requirements to meet the different needs, such as plastic bag, carton box, wooden case, crate, etc.