Product Details

Features and Benefits

1.Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341 and a minimum average Charpy impact value of 40 ft-lbs;

2.Ends and drive sections, IDs and connections machined and inspected to API and NS-1 specifications;

3.Kelly bars ultrasonically inspected over full length and section;

4.Shipped in a protective steel-cased scabbard;

When ordering Please specify:

5.Kelly type ();

6.Nominal size and overall length;

7.Upper and lower Connections.

Specifications - Rotary Kelly

Kelly

Nom Size (in)	Top Connection(LH)		Bottom Connection		I.D.(in)		Drive Section(in)
Nom Size (in)	Standard O.D.(in)	Optional O.D.(in)	Square O.D.(in)	Hex. O.D.(in)	Square	Hex.	A	B
2 1/2	6 5/8REG 7 3/4	4 1/2REG 5 3/4	NC26 85.7		1 1/4		3 2/7
3	6 5/8REG 7 3/4	4 1/2REG 5 3/4	NC31 4 1/8	NC26 3 3/8	1 3/4	1 1/4	4	3 3/8
3 1/2	6 5/8REG 7 3/4	4 1/2REG 5 3/4	NC38 4 3/4	NC31 4 1/8	2 1/4	1 3/4	4 1/2	4
4 1/4	6 5/8REG 7 3/4	4 1/2REG 5 3/4	NC46 6 1/4	NC38 4 3/4	2 4/5	2 1/4	5 4/7	4 4/5
4 1/4	6 5/8REG 7 3/4	4 1/2REG 5 3/4	NC50 6 3/8	NC38 4 3/4	2 4/5	2 1/4	5 4/7	4 4/5
5 1/4	6 5/8REG 7 3/4		5 1/2FH 7	NC46 6 1/4	3 1/4	3	7	6
5 1/4	6 5/8REG 7 3/4		NC56 7	NC50 6 3/8	3 1/4	3 1/4	7	6
6	6 5/8REG 7 3/4			5 1/2FH 7		3 1/2		6 4/5
6	6 5/8REG 7 3/4			NC56 7		3 1/2		6 4/5