Roller Kelly Bushings Made in China

• After-sales Service: 18mths
• Warranty: 18mths
• Manufacturing Process: Casting
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Model NO.: HDS
• Standard: API 7K
• Lead Time: 30days
• Supply: 50sets/Mth
• Pkg: Wooden Box
• Transport Package: Steel Carton
• Specification: standard
• Trademark: Rutong
• Origin: China
• HS Code: 8431431000
• Production Capacity: 5000 Pieces Per Year

Product Description

Roller Kelly Bushings  

Roller Kelly Bushings can be classed as two types based on different ways of drive, square drive and pin drive. Also they can be classed as three types based on different style, heavy, medium and light-duty. They are used for 17.1/2 to 49.1/2inch rotary tables. They are designed and manufactured according to API Spec 7K.

Model	Type	Drive way	applicable size of kelly(in)
			Square	Hex
HDS	Heavy duty	Square drive	2^1/2-6	3-6
27-HDP		Pin drive	2^1/2-6	3-6
20-HDP			2^1/2-6	3-6
RTM4	Medium duty	Square drive	2^1/2-5^1/4	3-4^1/4
RTS4	Light duty		2^1/2-4^1/4	3-4^1/4