MAI Grout Rod, Bits & Accessories
Hollow Grout Rod

Grout Bodies and Rotojec Shanks

Large Grout Swivels (Female - Female) Rotojec Shanks (Junctions Bars) Rope threads are listed, but all threads are available. Contact us to place an order for different threads.

Assembly consists of a Grout Body and a Rotojec Shank. In order to have a complete Grout Swivel Assembly, you must order both.

od shankgrout swivel3" OD Shank - 5" OD Bodygrout swivel
Heavy Duty 4" OD Shank - 6" OD Body
Part NumberWt.PricePart NumberWt.Price
Grout Injection Body RJ-BODY 25 $625.00 RJ-BODYHD 32 $835.00
Seals/Double Lip (set of 4) RJ-SEALS 0.1 $64.00 RJ-SEALSHD 0.1 $125.35
Rotojec Shank T38-R32 RJ-T38-R32 16 $425.00 RJ-T38-R32HD 29 $560.00
Rotjec Shank T38-R38 RJ-T38-R38 16 $425.00 RJ-T38-R38HD 29 $560.00
Rotojec Shank T38-R51 RJ-T38-R51 16 $425.00 RJ-T38-R51HD 29 $560.00
Rotojec Shank T45-R32 RJ-T45-R32 16 $425.00 RJ-T45-R32HD 29 $560.00
Rotojec Shank T45-R38 RJ-T45-R38 16 $425.00 RJ-T45-R38HD 29 $560.00
Rotojec Shank T45-R51 RJ-T45-R51 16 $425.00 RJ-T45-R51HD 29 $560.00
Rotojec Shank T51-R32 RJ-T51-R32 16 $425.00 RJ-T51-R32HD 29 $560.00
Rotojec Shank T51-R38 RJ-T51-R38 16 $425.00 RJ-T51-R38HD 29 $560.00
Rotojec Shank T51-R51 RJ-T51-R51 16 $425.00 RJ-T51-R51HD 29 $560.00
Rotojec Shank H55-R32 RJ-H55-R32 16 $425.00 RJ-H55-R32HD 29 $560.00
Rotojec Shank H55-R38 RJ-H55-R38 16 $425.00 RJ-H55-R38HD 29 $560.00
Rotojec Shank H55-R51 RJ-H55-R51 16 $425.00 RJ-H55-R51HD 29 $560.00
Rotojec Shank H55-T76 RJ-H55-T76HD 29 $560.00
Rotojec Shank T51-T76 RJ-T51-T76HD 29 $560.00

Seal Installation



collared grout shank

Collared Grout Shanks are made on request. They are $125.00 more expensive than the standard shank price. Contact us to place an order for the Collared Grout Shank.

Grout Swivels

striking bar swivel bar bit

The above image consists of a shank adaptor, coupling adaptor, a grout swivel assembly, another coupling adaptor, a sacrificial grout rod, and sacrificial grout bit. A grout swivel assembly is made up of a combination of a flushing collar, junction bar, and two seals.

grout swivel
Grout Swivel Assembly
flushing collar
Flushing Collar
junction bar small
Junction Bar
grout seals
Seals
R32- 1 14" Rope GSR32 $380.00 GSR32-FC $250.00 GSR32-JB $195.00 GSR32-S $13.50
R38 - 1 12" Rope GSR38 $420.00 GSR38-FC $250.00 GSR38-JB $195.00 GSR38-S $13.50
T38 GST38 $420.00 GST38-FC $250.00 GST38-JB $195.00 GST38-S $13.50

Swivel Savers

swivel savers

Swivels are machined and heat treated while sacrificial grout rod is relatively soft. In heavy percussive applications it is not uncommon for the grout rod to deform inside of the swivel causing the rod to stick inside the Rotojec shank. Swivel savers are designed with a shortened male thread to facilitate removal from the shank and send the percussive energy through the shoulder of the swivel. If a rod becomes stuck in the swivel saver – you should be able to remove the hardened saver from the hardened shaft and extract the softer grout rod from the saver "at your convenience.” It is also common to use these savers as adaptors to effectively drive several different sizes of grout rod with the same Rotojec shank.

R51M TO R51F SSR51M-R51F $180.00
R38M TO R38F SSR38M-R38F $145.00
R51M TO R38F SSR51M-R38F $180.00
R38M TO R51F SSR38M-R51F $180.00
R38M TO R32F SSR38M-R32F $145.00

Stud Rods and Stud Rods Adaptors

stud rods small

Stud rods are short sections of male to male rods that are used to extend the reach slightly and to adapt to different thread than what you may currently have available. These are machined and heat treated for strength and longevity.

H55 To T45 (with flat) SRH55-T45 $175.00
H55 To T51 (with flat) SRH55-T51 $175.00
T51 To R51 (with flat) SRT51-R51 $145.00
T45 To R32 (with flat) SRT45-R32 $105.00
T45 To T38 (with flat) SRT45-T38 $105.00
T38 To R32 SRT38-R32 $80.00
T38 To R25 SRT38-R25 $80.00
R25 To R25 (Extension Rod with flat) ER25-25R-12 $58.00
R32 To R25 (with flat) SRR32-R25 $65.00
R32 to R32 (Extension Rod with flat) ER32-32R-8 $40.00
R32 to R32 (Extension Rod with flat) ER32-32R-12 $44.00
R38 to R32 (with flat) SRR38-R32 $80.00
R51 To R51 (with flat) ER51-51R-12 $145.00
T51 To T51 (with flat) ET51-51R-12 $145.00
H55 To H55 (with flat) EH55-55R-12 $175.00
T45 Male All Thread
Cut to length
Price per Foot
ET45-12AT $50.00
T38 Male All Thread
Cut to length
Price per Foot
ET38-12AT $35.00
R38 Male All Thread
Cut to length
Price per Foot
ER38-12AT $35.00
R32 Male All Thread
Cut to length
Price per Foot
ER32-12AT $32.00

Coupling Adaptors

coupling adaptor

Coupling adaptors are female to female and used to adapt to a different thread than what you may currently be running. They are machined and heat treated blast-hole quality couplings. Minimum order quantities may apply.

For more options, see the adaptors page.

Choose One End:

Other End:

R25R32R38R51H55T38T45T51TTN40TTN52
CPLR25 $36.10 CAR25-R32 $80.50 CAR25-R38 $109.20 CAR25-R51 QUOTE CAR25-H55 QUOTE CAR25-T38 $109.20 CAR25-T45 $143.05 CAR25-T51 QUOTE CAR25-TTN40 QUOTE CAR25-TTN52 QUOTE
CAR25-R32 $80.50 CPLR32 $40.20 CAR32-R38 $81.90 CAR32-R51 $242.50 CAR32-H55 QUOTE CAR32-T38 $81.90 CAR32-T45 $143.05 CAR32-T51 QUOTE CAR32-TTN40 QUOTE CAR32-TTN52 QUOTE
CAR25-R38 $109.20 CAR32-R38 $81.90 CPLR38 $56.20 CAR38-R51 $242.50 CAR38-H55 QUOTE CAR38-T38 $81.90 CAR38-T45 $143.05 CAR38-T51 QUOTE CAR38-TTN40 QUOTE CAR38-TTN52 QUOTE
CAR25-R51 QUOTE CAR32-R51 $242.50 CAR38-R51 $242.50 CPLR51 $242.50 CAR51-H55 $242.50 CAT38-R51 $242.50 CAT45-R51 $242.50 CAR51-T51 $242.50 CATTN40-R51 QUOTE CAR51-TTN52 QUOTE
CAR25-H55 QUOTE CAR32-H55 QUOTE CAR38-H55 QUOTE CAR51-H55 $242.50 CPLH55 QUOTE CAT38-H55 QUOTE CAT45-H55 QUOTE CAT51-H55 QUOTE CATTN40-H55 QUOTE CATTN52-H55 QUOTE
CAR25-T38 $109.20 CAR32-T38 $81.90 CAR38-T38 $81.90 CAT38-R51 $242.50 CAT38-H55 QUOTE CPLT38 $56.20 CAT38-T45 $107.30 CAT38-T51 $242.50 CAT38-TTN40 $109.20 CAT38-TTN52 $242.50
CAR25-T45 $143.05 CAR32-T45 $143.05 CAR38-T45 $143.05 CAT45-R51 $242.50 CAT45-H55 QUOTE CAT38-T45 $107.30 CPLT45 $81.20 CAT45-T51 $181.10 CATTN40-T45 $143.05 CAT45-TTN52 $242.50
CAR25-T51 QUOTE CAR32-T51 QUOTE CAR38-T51 QUOTE CAR51-T51 $242.50 CAT51-H55 QUOTE CAT38-T51 $242.50 CAT45-T51 $181.10 CPLT51 $113.00 CATTN40-T51 $242.50 CAT51-TTN52 $242.50
CAR25-TTN40 QUOTE CAR32-TTN40 QUOTE CAR38-TTN40 QUOTE CATTN40-R51 QUOTE CATTN40-H55 QUOTE CAT38-TTN40 $109.20 CATTN40-T45 $143.05 CATTN40-T51 $242.50 CPLTTN40 QUOTE CATTN40-TTN52 QUOTE
CAR25-TTN52 QUOTE CAR32-TTN52 QUOTE CAR38-TTN52 QUOTE CAR51-TTN52 QUOTE CATTN52-H55 QUOTE CAT38-TTN52 $242.50 CAT45-TTN52 $242.50 CAT51-TTN52 $242.50 CATTN40-TTN52 QUOTE CPLTTN52 QUOTE

 

 

Miscellaneous Coupling Adaptors
CAR32-R38SQ 1 14" Rope - 1 12" Rope SQ. $121.90
CAR32-T38SQ 1 14" Rope - T38 W/ Flats $121.90
CAR38-T38WF 1 12" Rope - T38 W/ Flats $97.50
CAT51-T76 T 51 - T 76 $400.00
CPLR32HD R32 Coupling - Heavy Duty (2" OD) $64.00
CPLR32T R32 Coupling - Thin Wall (1-58" OD) $44.20
CPLR25T R25 Coupling - Thin Wall (1-38" OD) $36.10
CPLR28 R28 Coupling QUOTE
CAT38-TTN30 T 38 - TTN 30 QUOTE
CAH55-R63 H 55 - R 63 QUOTE
CAT45-R63 T 45 - R 63 QUOTE

MAI Bits

Also threading Williams, Titan, and more. Minimum Order Quantity may Apply. 10% discount on orders of 100 or more for Carbide Cross and/or Button Bits.

Carbide Cross Bits

carbide cross bit

SizeWt.R32R38R51T76TTN40TTN52
2" 1.5 IBOBC-R32-51
$31.20
212" 3.5 IBOBC-R32-64 IBOBC-R38-64 IBOBC-TTN40-64
$41.13 $41.13 $41.13
3" 5.5 IBOBC-R32-76 IBOBC-R38-76 IBOBC-R51-76 IBOBC-TTN40-76 IBOBC-TTN52-76
$45.69 $45.69 $45.69 $45.69 $45.69
312" 6.0 IBOBC-R32-89 IBOBC-R38-89 IBOBC-R51-89 IBOBC-TTN40-89 IBOBC-TTN52-89
$50.55 $50.55 $50.55 $50.55 $50.55
4" 7.5 IBOBC-R32-102 IBOBC-R38-102 IBOBC-R51-102 IBOBC-TTN40-102 IBOBC-TTN52-102
$60.41 $60.41 $60.41 $60.41 $60.41
412" 9.0 IBOBC-R32-115 IBOBC-R38-115 IBOBC-R51-115 IBOBC-TTN40-115 IBOBC-TTN52-115
$64.74 $64.74 $64.74 $64.74 $64.74
5" 17.5 IBOBC-R38-127 IBOBC-R51-127 IBOBC-T76-127 IBOBC-TTN40-127 IBOBC-TTN52-127
$103.57 $103.57 $103.57 $103.57 $103.57
6" 20.0 IBOBC-R38-152 IBOBC-R51-152 IBOBC-T76-152 IBOBC-TTN40-152 IBOBC-TTN52-152
$125.08 $125.08 $125.08 $125.08 $125.08
7" 21.0 IBOBC-R38-178 IBOBC-R51-178 IBOBC-T76-178 IBOBC-TTN40-178 IBOBC-TTN52-178
$162.13 $162.13 $162.13 $162.13 $162.13

Carbide Button Bits

Also threading Williams, Titan, and more. Minimum Order Quantity may Apply.

carbide button bit

SizeWt.R32R38R51T76TTN40TTN52
212" 3.5 IBOBB-R32-64 IBOBB-R38-64 IBOBB-TTN40-64
$50.66 $50.66 $50.66
3" 5.5 IBOBB-R32-76 IBOBB-R38-76 IBOBB-R51-76 IBOBB-TTN40-76 IBOBB-TTN52-76
$52.75 $52.75 $52.75 $52.75 $52.75
312" 6.0 IBOBB-R32-89 IBOBB-R38-89 IBOBB-R51-89 IBOBB-TTN40-89 IBOBB-TTN52-89
$56.87 $56.87 $56.87 $56.87 $56.87
4" 7.5 IBOBB-R32-102 IBOBB-R38-102 IBOBB-R51-102 IBOBB-TTN40-102 IBOBB-TTN52-102
$69.89 $69.89 $69.89 $69.89 $69.89
412" 9.5 IBOBB-R32-115 IBOBB-R38-115 IBOBB-R51-115 IBOBB-TTN40-115 IBOBB-TTN52-115
$78.29 $78.29 $78.29 $78.29 $78.29
5" 19.0 IBOBB-R38-127 IBOBB-R51-127 IBOBB-T76-127 IBOBB-TTN52-127
$118.15 $118.15 $118.15 $118.15
6" 23.0 IBOBB-R38-152 IBOBB-R51-152 IBOBB-T76-152 IBOBB-TTN52-152
$148.12 $148.12 $148.12 $148.12

Hardened Steel Soil Bits

Also threading Williams, Titan, and more. Minimum Order Quantity may Apply.

hd steel bit

Wt.R32PriceR38Price
2" 1 IBOBS-R32-51 $13.92 IBOBS-R38-51 $13.92
212" 1.3 IBOBS-R32-64 $14.79 IBOBS-R38-64 $14.79
3" 2 IBOBS-R32-76 $16.05 IBOBS-R38-76 $16.05
312" 2.6 IBOBS-R32-89 $20.22 IBOBS-R38-89 $20.22
4" 2.7 IBOBS-R32-102 $38.37 IBOBS-R38-102 $38.37
5" *non-stock - made to order

3-Wing Drag Bit - Clay, Sand & Soil

Also threading Williams, Titan, and more. Minimum Order Quantity may Apply.

wing drag bit

5" IBOBD-R32-127 $93.75 IBOBD-R38-127 $93.75 IBOBD-R51-127 IBOBD-T76-127 $93.75
6" IBOBD-R38-152 $100.00 IBOBD-R51-152 IBOBD-T76-152 $100.00
7" IBOBD-R38-178 $118.75 IBOBD-R51-178 IBOBD-T76-178 $118.75
8" IBOBD-R38-203 $131.25 IBOBD-R51-203 IBOBD-T76-203 $131.25

MAI Accessories

R32R38
Description Part Number Price Description Part Number Price
ANCHOR BARS (10')
rods
IBOGR-R32-10 $39.91 IBOGR-R38-10 $70.51
EXTENSION COUPLINGS
mai couplings
"L&N" R32/Ø42/L145 IBOCPL-R32 $14.72 "NG" R38/Ø51/L220 IBOCPL-R38 $19.37
NUTS
nuts
R32/SW46/L45 IBONUT-R32 $11.54 R38/SW50/L50 IBONUT-R38 $9.56
DEFORMED PLATES
plates
200x200x10mm Ø35mm 32mm Bar IBO9899100798 $8.43 200x200x12mm Ø41mm 38mm Bar IBO9899100800 $9.80
R51LR51N
Description Part Number Price Description Part Number Price
ANCHOR BARS (10')
rods
IBOGR-R51-10 $79.36 IBOGR-R51N-10 $103.54
EXTENSION COUPLINGS
mai couplings
"NG" R51N/Ø63/L220 IBOCPL-R51 $25.57 "NG" R51N/Ø63/L220 IBOCPL-R51 $25.57
NUTS
nuts
R51/SW75/L70 IBONUT-R51 $28.52 R51/SW75/L70 IBONUT-R51 $28.52
DEFORMED PLATES
plates
200x200x30mm Ø60mm 51mm Bar IBO9899150096 $36.85 250x250x40mm Ø60mm 51mm Bar IBO9899150097 $73.72

Specifications

AnchorOutside DiameterInternal Diameter (Avg)Effective Cross Sectional Area (Avg)Ultimate Load CapacityYield Load CapacityWeight per Footpdf
R 32N 1 14" 0.73" 0.61 in² 63 kips 51.5 kips 2.3 lbs R 32N
R 32S 1 14" 0.59" 0.76 in² 81 kips 63 kips 2.85 lbs R 32S
R 38 1 12" 0.75" 1.11 in² 112 kips 90 kips 4.0 lbs R38
R 51L 2" 1.42" 1.20 in² 123.6 kips 101.2 kips 4.7 lbs R 51L
R51N 2" 1.30" 1.46 in² 180 kips 141.6 kips 5.6 lbs R 51N
T 76N 3" 2" 2.84 in² 360 kips 270 kips 10.0 lbs T 76N
T 76S 3" 1.77" 3.72 in² 428 kips 338 kips 13.2 lbs T 76S