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kelly
We offer square and hexagonal kellys.Kellys are available up to 16 meters long.Our Kellys are made from AISI 4145H alloy bars that are quenched and tempered full length.A hardness range of 285 to 341 BHN and a minimum impact value of 54 Joules as per ASTM A 370 are maintained one inch bellow the surface at room temperature.To improve resistance to galling,all connections are phosphate-coated with an API thread compound.Each bar used to manufacture kellys has been examined with magnetic particle inspections and ultrsonic inspections.
Square Kelly Drive Section
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
|
Kelly size |
Length drive
section |
Length Overall |
Across flats |
Across Corners |
Across Corners |
Radius |
Radius |
Wall thickness eccentric bore |
|
m |
m |
|
Standard |
Optional |
Standard |
Optional |
mm |
mm |
mm |
mm |
mm |
mm |
|
LD |
LD |
L |
L |
DFL |
DC |
DCC |
RC |
RCC |
t |
|
+0.152 -0.127 |
+0.152 -0.127 |
+0.152 0 |
+0.152 0 |
|
|
0 -0.4 |
±1.6 |
Ref. only |
min |
|
63.5 |
11.28 |
— |
12.19 |
— |
63.5 |
83.3 |
82.55 |
7.9 |
41.3 |
11.43 |
|
76.2 |
11.28 |
— |
12.19 |
— |
76.2 |
100.0 |
98.42 |
9.5 |
49.2 |
11.43 |
|
88.9 |
11.28 |
— |
12.19 |
— |
88.9 |
115.1 |
112.70 |
12.7 |
56.4 |
11.43 |
|
108.0 |
11.28 |
15.54 |
12.19 |
16.46 |
108.0 |
141.3 |
139.70 |
12.7 |
69.8 |
12.06 |
|
133.4 |
11.28 |
15.54 |
12.19 |
16.46 |
133.3 |
175.4 |
171.45 |
15.9 |
85.7 |
15.88 |
Square Kelly end upsets and connections
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
|
Kelly size |
Upper box connection |
Lower pin connection |
|
|
Label |
Outside diameter |
Bevel diameter |
Upset length |
Label |
Outside diameter |
Inside diameter |
Bevel diameter |
Upset length |
|
|
DU |
DF |
LU |
|
DLR |
d |
DF |
LL |
|
±0.8 |
±0.4 |
+63.5 0 |
±0.8 |
+1.6 0 |
±0.4 |
+63.5 0 |
|
63.5 |
Standard |
6 5/8REG |
196.8 |
186.1 |
406.4 |
NC26 |
85.7 |
31.8 |
83.0 |
508.0 |
|
Optional |
4 1/2REG |
146.0 |
134.5 |
406.4 |
NC26 |
85.7 |
31.8 |
83.0 |
508.0 |
|
76.2 |
Standard |
6 5/8REG |
196.8 |
186.1 |
406.4 |
NC31 |
104.8 |
44.4 |
100.4 |
508.0 |
|
Optional |
4 1/2REG |
146.0 |
134.5 |
406.4 |
NC31 |
104.8 |
44.4 |
100.4 |
508.0 |
|
88.9 |
Standard |
6 5/8REG |
196.8 |
186.1 |
406.4 |
NC38 |
120.6 |
57.2 |
116.3 |
508.0 |
|
Optional |
4 1/2REG |
146.0 |
134.5 |
406.4 |
NC38 |
120.6 |
57.2 |
116.3 |
508.0 |
|
108.0 |
Standard |
6 5/8REG |
196.8 |
186.1 |
406.4 |
NC46 |
158.8 |
71.4 |
145.2 |
508.0 |
|
Standard |
6 5/8REG |
196.8 |
186.1 |
406.4 |
NC50 |
161.9 |
71.4 |
154.0 |
508.0 |
|
Optional |
4 1/2REG |
146.0 |
134.5 |
406.4 |
NC46 |
158.8 |
71.4 |
145.2 |
508.0 |
|
Optional |
4 1/2REG |
146.0 |
134.5 |
406.4 |
NC50 |
161.9 |
71.4 |
154.0 |
508.0 |
|
133.4 |
Standard |
6 5/8REG |
196.8 |
186.1 |
406.4 |
5 1/2FH |
177.8 |
82.6 |
170.6 |
508.0 |
|
Standard |
6 5/8REG |
196.8 |
186.1 |
406.4 |
NC56 |
177.8 |
82.6 |
171.0 |
508.0 |
|
|
|
|
|
|
|
|
|
|
|
|
Hexagonal kelly drive section
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
|
Kelly size |
Length drive
section |
Length Overall |
Across flats |
Across Corners |
Across Corners |
Radius |
Radius |
Wall thickness eccentric bore |
|
m |
m |
|
Standard |
Optional |
Standard |
Optional |
mm |
mm |
mm |
mm |
mm |
mm |
|
LD |
LD |
L |
L |
DFL |
DC |
DCC |
RC |
RCC |
t |
|
+0.152 -0.127 [1] [2] һҳ |
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