Reverse Circulation Hammers and Bits

RC Hammers

The Missile Reverse Circulation line of hammers are used in a wide range of drilling rigs in various geological formations. They are preferred by on-site geologists for their high percentage of uncontaminated sampling; their fast penetration rates; and their trouble-free, low-cost, and long life performance. The pride of workmanship and outstanding engineering make these hammers a superior value. Excellent dependability, service, and support.

RC Hammer Features

RC 400

4 5/8" | 4 3/4" | 4 7/8" | 5" | 5 1/8" | 5 1/4"

RC400 Component Parts
No.	Description	Part No.
1	Back Head	415020
2	NRV Seal	R400019
3	NRV	R400018
4	NRV Spring	R400017
5	Make Up Steel	415016
6	Make Up Rubber	415015
7	NRV Housing	415014
8	Sample Tube Top	R400012
9	O-ring	-
10	Sample Tube Bottom	R400013
11	Air Distributor Inner O-ring	-
12	Air Distributor	415011
13	Air Distributor Outer O-ring (2)	-
14	Piston	415009
15	Inner Sleeve Cylinder	415008
16	Bit Bearing Bushing	415007
17	Wear Sleeve	415006
18	Bit Retaining Ring O-ring	-
19	Bit Retaining Ring	415004
20	4 5/8" Locking Shroud	458400SHROUD
20	4 3/4" Locking Shroud	434400SHROUD
20	4 7/8" Locking Shroud	478400SHROUD
20	5" Locking Shroud	5400SHROUD
20	5 1/8" Locking Shroud	518400SHROUD
20	5 1/4" Locking Shroud	514400SHROUD
20	Shroud Locking Key (2)	R400003
21	Chuck w/Lock	415001
-	O-Ring Kit	415005

HAMMER SPECIFICATIONS
Length (w/o drill bit)	46.647"
Outside Diameter	4.449"
Weight (w/o bit)	134.1 lbs.
Cylinder Bore	3.518"
Piston O.D.	3.514"
Piston Stroke	3.346"
Piston Weight	22.52 lbs.
Hole Sizes	4 5/8" - 5 1/8"
Air Pressure Consumption	150 psi - 350 psi
Wrench Size	A/F 3.496"
Connection	Std. 3 1/2" Remet

AIR CONSUMPTION CHART
PSI	100	150	200	250	300	350	400
CFM	-	225	330	400	510;	625	-

Download RC400 Brochure

RC 475

5 1/8" | 5 1/4" | 5 3/8" | 5 1/2" | 5 3/4" | 6"

RC475 Component Parts
No.	Description	Part No.
1	Back Head	475020
2	NRV Seal	R400019
3	NRV	R400018
4	NRV Spring	R400017
5	Make Up Steel	475016
6	Make Up Rubber	475015
7	NRV Housing	475014
8	Sample Tube Top	R400012
9	O-ring	-
10	Sample Tube Bottom	R400013
11	Air Distributor Inner O-ring	-
12	Air Distributor	475011
13	Air Distributor Outer O-ring (2)	-
14	Piston	475009
15	Inner Sleeve Cylinder	475008
16	Bit Bearing Bushing	475007
17	Wear Sleeve	475006
18	Bit Retaining Ring O-ring	-
19	Bit Retaining Ring	475004
20	5 1/2" Locking Shroud	512475SHROUD
20	5 1/4" Locking Shroud	514475SHROUD
20	5 1/8" Locking Shroud	518475SHROUD
20	5 3/8" Locking Shroud	538475SHROUD
20	5 3/4" Locking Shroud	534475SHROUD
20	6" Locking Shroud	6475SHROUD
20	Shroud Locking Key (2)	R400003
21	Chuck w/Lock	475001
-	O-Ring Kit	475005

HAMMER SPECIFICATIONS
Length (w/o drill bit)	45.622"
Outside Diameter	4.748"
Weight (w/o bit)	143.44 lbs.
Cylinder Bore	3.775"
Piston O.D.	3.769"
Piston Stroke	3.346"
Piston Weight	27.2 lbs.
Hole Sizes	5 1/8" - 5 3/4"
Air Pressure Consumption	150 psi - 350 psi
Wrench Size	A/F 3.496"
Connection	Std. 4 1/2" Remet

AIR CONSUMPTION CHART
PSI	100	150	200	250	300	350	400
CFM	-	325	430	500	610;	725	-

Download RC475 Brochure

Missile LX RC Hammer Breakdown

RC Bits

We carry a large inventory of RC bits for convenient and quick delivery. Standard bits come with higher grade carbides for longer, harder drilling performance. Diamond buttons are available by special order on all bits. Economize the diamond button cost even more by reclaiming the used diamonds (if in good shape) and have them reinserted in to a new bit body. Please contact us for additional details.