iso 4 6 grade accuracy grinding gear

{"cid":"91220287","title":"Orthogonal Grinding Gear with ISO 4-6 Grade Accuracy and HRC 58-62 Hardness for 90\u00b0 Intersecting Shaft Applications","imgUrl":"https:\/\/img.ismap.com\/nimg\/8c\/fb\/8db7302e70974fc6b61c54e9b68e-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"DINGSCO","Model Number":"According to customers' requests","Minimum Order Quantity":"Negotiable","Delivery Time":"(Sample order) 7 days","Certification":"ISO 9001","Place of Origin":"Changsha, China","Payment Terms":"T\/T","Supply Ability":"Negotiable","Packaging Details":"According to customers' requests","Material":"20CrMnTi,20NiCrMo","Shape":"Spiral Bevel Gear \/ Hypoid Gear","Type":"Gleason","Teeth Accuracy Grade":"ISO 4-6 Grade","Heat treatment":"Quenching \/ surface carburizing \/ nitriding","Surface Hardness":"HRC 58\u201362","Service Life":"20,000\u201350,000 hours","Transmission Efficiency":"90%\u201396%","Input Speed":"1500\u20133000 rpm"}}

{"cid":"91212205","title":"ISO 6 Grade Precision Transmission Gear Alloy Steel Pinion Spur","imgUrl":"https:\/\/img.ismap.com\/nimg\/41\/c4\/28d49a3072f51ab48a0ff74aa215-200x200-1.jpg","attrs":{"Price":"$2\/ Piece","Brand Name":"YIZGEAR","Model Number":"GS2023010101","Minimum Order Quantity":"10 Pcs","Delivery Time":"45 Days","Place of Origin":"CHINA","Payment Terms":"T\/T, L\/C","Supply Ability":"5000 Sets\/Month","Packaging Details":"Plywood Crate","Module":"1","Pressure angle":"20\u00b0","Helix angle":"15\u00b0","Hardened Layer":"0.6-0.9mm","Steel Code":"20CrMnTi","Heat Treatment":"Cement"}}