AISI 4140 Steel Internal Spur Gear Transmission Annular Gear with 230-260 HB Hardness and ISO 8-9 Grade Accuracy

Name: AISI 4140 Steel Internal Spur Gear Transmission Annular Gear with 230-260 HB Hardness and ISO 8-9 Grade Accuracy
Brand: Henan Yizhi Machinery Co., Ltd

Price Negotiable

Price: $200.0/Piece

MOQ: 1 Piece

Delivery Time: 55 Days

Brand: YIZGEAR

Product Description

Custom AISI 4140 Steel Internal Spur Gear

Professional transmission annular gear manufactured from high-quality AISI 4140 steel, designed for reliable power transmission in industrial applications.

Internal vs External Gear Comparison

Internal gears have teeth generated on the inner surface, while external gears have teeth on the outer surface
Meshing an external gear with an internal gear results in rotation in the same direction
Meshing two external gears results in rotation in opposite directions
Low ratio reduction is unsuitable for internal-external gear pairs but acceptable for external-external gear pairs

Product Specifications

Custom Made	Available
Gear Profile Type	Cylindrical Gear
Gear Teeth Manufacturing	Gear Shaping
Gear Teeth Grinding	Available if needed
Module (M)	Custom
Number of Teeth (Z)	Custom
Pressure Angle (α)	Custom
Helix Angle (β)	Custom
Teeth Accuracy Grade	ISO 8-9 Grade
Heat Treatment	Quenching & Tempering / Induction Hardening
Hardness	230-260 HB

Steel Grade Comparison

CHINA/GB	ISO	ГΟСТ	ASTM	JIS	DIN
45	C45E4	45	1045	S45C	CK45
40Cr	41Cr4	40X	5140	SCr440	41Cr4
20CrMo	18CrMo4	20ХМ	4118	SCM22	25CrMo4
42CrMo	42CrMo4	38XM	4140	SCM440	42CrMo4
20CrMnTi		18XГT		SMK22
20Cr2Ni4		20X2H4A
20CrNiMo	20CrNiMo2	20XHM	8720	SNCM220	21NiCrMo2
40CrNiMoA		40XH2MA/40XHMA	4340	SNCM439	40NiCrMo6/36NiCrMo4
20CrNi2Mo	20NiCrMo7	20XH2MA	4320	SNCM420