R1H Hollow-Core Spin-Lock Rock Bolt

 

Pre-Stressable • Positive Grouting • Permanent

Through years of development, Williams has produced and patented the Pre-stressable, Hollow-Core, Groutable Spin-Lock Rock Bolting Systems. The hollow-core allows the bolt to always be grouted from the lowest gravitational point. In an up-bolting situation, the grout is pumped in through the plastic grout tube and begins to fill the drill hole from the plate. The grout rises until the entire hole is filled and the grout returns through the hollow bar. In down grouting situations, the grout is pumped through the hollow bar and starts at the bottom of the hole. Grout rises and returns through the de-air tube when the hole is filled. Improperly or incomplete grouted bolts are subjected to relaxation and corrosion. Pre-measured capsule systems cannot properly account for unknown fissures and voids and often leave the bolt vulnerable to deterioration. Williams Hollow-Core Grouting System spreads grout through the rock fissures creating a completely protected monolithic section including rock, grout, and bolt. Because the Spin-Lock head assembly provides 300º perimeter expansion anchorage and develops the full strength of the rod, the hollow-core rock bolt may be pre-stressed to the desired load and tested prior to grouting. The 1” diameter Hollow-Core is also available in an All-Thread design of identical capacities

R1H Structural Properties

Yield
Stress
Ultimate
Stress
Elongation
in 2” (51 mm)
Reduction
of Area
91 KSI
(627 MPa)
124 KSI
(854 MPa)
15% min 40% min

R1H High Grade Hollow-Core Rock Anchor

ASTM A615 Deformation Pattern

Dia &
Threads
per In
Recomm. Design
Load at Approx.
2:1 Safety Factor
Maximum
Working
Load to Yield
Average
Ultimate
Strength (7)
Drill Hole
Diameter
(1)
Type
Head
Ass’y
Torque ft-lbs Part
Number
To Expand
Shell (2)
On Nut for
Tension (5)
1” – 8
(25 mm)
33 kips
(147 kN)
47 kips
(209 kN)
66 kips
(294 kN)
1-5/8” – 41 mm)
1-3/4” – (44 mm)
1-3/4” – (44 mm)
2” – (51 mm)
A 13
B 14
C 14
B 16
250 ft-lbs
(450*)
400 R1H08A13
R1H08B14
R1H08C14
R1H08B16
1-3/8” – 8
(35 mm)
69 kips
(307 kN)
100 kips
(445 kN)
138 kips
(614 kN)
2-1/2” – (64 mm)
3” – (76 mm)
B 20
B 24
750 ft-lbs
(1200*)
Note (3) R1H11B20
R1H11B24
2” – 6
(51 mm)
150 kips
(667 kN)
219 kips
(974 kN)
300 kips
(1334 kN)
3-1/2” – (89 mm) C 28 1000 ft-lbs
(3700*)
Note (3) R1H16C28

(*) Do not exceed these numbers
(1)Care should be taken to drill a straight and properly sized hole.
(2) A function of strata strength. More torque may be required on long anchors or in special rock conditions. Consult your Williams Representative.
(3) Stress to desired tensile load using a hollow ram hydraulic jack. Consult your Williams Representative.
(4) ACI 355.1R section 3.2.5.1 indicates an ultimate strength in shear has a range of 0.6 to 0.7 of the ultimate tensile strength.Designers should provide adequate safety factors for safe shear strengths based on the condition of use.
(5) All above torque values are for greased (MolyKote GN) threads.
(6) WILLIAMS reserves the right to ship full length or coupled units as necessary.
(7) Inconsistencies in rock from site to site and even from hole to hole may affect anchor performances. Fissures, voids, seams, rock psi, drilling through clay or bentonite and direction of bedding planes are all possible variables. Should problems occur, consult Williams for troubleshooting.

 

Head Assemblies

The Williams Spin-Lock anchor assembly gives full 300 degree bearing area. The smooth shell design allows for maximum shell to rock contact and eliminates “point of contact” created by serrated designs. The cone design supports the shell 300°, thereby eliminating any possible collapse of the shell under high load conditions. The thrust ring stop in front of the shell prevents any possible rebound of the expanded shell down the cone when subjected to nearby blasting.The Williams Spin-Lock anchor has been field proven on the world’s largest projects to far exceed in tension capacity any other mechanical anchor on the market.

 

Type A Short Shell & Cone

 

Head
Assembly
& Drill Hole
Diameter
Bolt Dia. &
Thread Form
Standard
Cone
Length &
Part Num.
Standard
MAL Shell
Length &
Part Num.
Overall
Assy.
Length
A10

1-1/4”
(32 mm)

1/2” – 13 NC
(13 mm)
1-7/8”
SC-114-4
1-7/8”
SS-114
4-1/4”
(108 mm)
5/8” – 11 NC
(16 mm)
1-7/8”
SC-114-5
1-7/8”
SS-114
4-1/4”
(108 mm)
A13

1-5/8”
(41 mm)

1/2” – 13 NC
(13 mm)
1-7/8”
SC-158-4
1-7/8”
SS-158
3-3/4”
(95 mm)
5/8” – 11 NC
(16 mm)
1-7/8”
SC-158-5
1-7/8”
SS-158
3-3/4”
(95 mm)
* 1” – 8 NC
(25 mm)
1-1/2”
SC-158-8
1-7/8”
SS-158
4-1/8”
(108 mm)

 

Type B Long Shell & Cone

 

Head
Assembly
& Drill Hole
Diameter
Bolt Dia. &
Thread Form
Long Cone
Length &
Part Num.
Long MAL
Shell
Length &
Part Num.
Overall
Assy.
Length
B14

1-3/4”
(44 mm)

3/4” – 10 NC
(19 mm)
3-3/4”
LC-158-6
3-3/4”
LS-175
8”
(203 mm)
1” – 8 NC *
(25 mm)
3-3/4”
LC-158-8
3-3/4”
LS-175
8-1/4”
(210 mm)
B16

2”
(51 mm)

7/8” – 9 NC
(22 mm)
2-1/4”
LC-200-7
4”
LS-200
6-7/8”
(175 mm)
1” – 8 NC
(25 mm)
2-1/4”
LC-200-8
4”
LS-200
6-7/8”
(175 mm)
1-1/8” – 7 NC
(30 mm)
2-1/4”
LC-200-9
4”
LS-200
7”
(178 mm)
B20

2-1/2”
(64 mm)

1-1/4” – 7 NC
(32 mm)
4”
LC-250-10
4”
LS-250
9-3/8”
(238 mm)
1-3/8” – 8 UN
(35 mm)
4”
LC-250-11
4”
LS-250
9-1/2”
(241 mm)
B24

3”
(76 mm)

1-3/8” – 8 UN
(35 mm)
5-1/2”
LC-300-11
5-1/2”
LS-300
12-1/2”
(318 mm)
1-1/2” – 6 NC
(38 mm)
5-1/2”
LC-300-12
5-1/2”
LS-300
12-5/8”
(321 mm)
1-3/4” – 5 NC
(45 mm)
5-1/2”
LC-300-14
5-1/2”
LS-300
12-7/8”
(327 mm)

 

Type C Long Shell & Cone w/Flange

 

Head
Assembly
& Drill Hole
Diameter
Bolt Dia. &
Thread Form
Long Cone
w/ Flange
Length &
Part Num.
Long MAL Shell
Length &
Part Num.
Overall
Assy.
Length
C14

1-3/4”
(44 mm)

3/4” – 10 NC
(19 mm)
4-1/4”
LCF-175-6
3-3/4”
LS-175
9”
(229 mm)
1” – 8 NC *
(25 mm)
4-1/4”
LCF-175-8
3-3/4”
LS-175
9-3/16”
(233 mm)
C18

2-1/4”
(57 mm)

1-1/8” – 7 NC
(30 mm)
4-7/8”
LCF-225-9
4”
LS-225
10”
(254 mm)
1-1/4” – 7 NC
(32 mm)
4-7/8”
LCF-225-10
4”
LS-225
10-1/4”
(260 mm)
C28

3-1/2”
(89 mm)

1-3/4” – 5 NC
(45 mm)
7”
LCF-350-16
6”
LS-350
15”
(381 mm)
1-7/8” – 8 UN
(48 mm)
7”
LCF-350-16
6”
LS-350
15”
(381 mm)
2” – 6 UN
(51 mm)
7”
LCF-350-16
6”
LS-350
15-1/8”
(384 mm)

Coupled Head Assemblies

Williams can manufacture Spin-Lock Anchor systems with the use of a transition coupling, which allows the anchor to be designed with a continuously workable thread-form. This is advantageous when the anchor length may need to be adjusted in the field due to variable site conditions. The transition coupling engages a continuously threaded U.N. bar into the head assembly and the All-Thread Bar (typically Grade 75 All-Thread Rebar or 150 KSI All-Thread-Bar) is attached to the other end of the coupling.


H1F Heavy Duty Hex Nuts

Bar
Diameter
Across
Flats
Across
Corners
Thickness Part
Number
1/4”
(6.4 mm)
1/2”
(13 mm)
0.6”
(15 mm)
15/64”
(6 mm)
H1F-02
3/8”
(9.5 mm)
11/16”
(18 mm)
0.8”
(20 mm)
23/64”
(9 mm)
H1F-03
1/2”
(13 mm)
7/8”
(22 mm)
1.0”
(26 mm)
31/64”
(12 mm)
H1F-04
5/8”
(16 mm)
1-1/16”
(27 mm)
1.2”
(31 mm)
39/64”
(16 mm)
H1F-05
3/4”
(19 mm)
1-1/4”
(32 mm)
1.4”
(37 mm)
47/64”
(19 mm)
H1F-06
7/8”
(22 mm)
1-7/16”
(37 mm)
1.7”
(42 mm)
55/64”
(22 mm)
H1F-07
1”
(25 mm)
1-5/8”
(41 mm)
1.9”
(48 mm)
63/64”
(25 mm)
H1F-08
1-1/8”
(29 mm)
1-13/16”
(46 mm)
2.1”
(53 mm)
1-7/64”
(28 mm)
H1F-09
1-1/4”
(32 mm)
2”
(51 mm)
2.3”
(59 mm)
1-7/32”
(31 mm)
H1F-10
1-3/8”
(36 mm)
2-3/16”
(56 mm)
2.5”
(64 mm)
1-11/32”
(34 mm)
H1F-11
1-1/2”
(38 mm)
2-3/8”
(60 mm)
2.7”
(70 mm)
1-15/32”
(37 mm)
H1F-12
1-3/4”
(43 mm)
2-3/4”
(70 mm)
3.18”
(81 mm)
1-23/32”
(44 mm)
H1F-14
1-7/8”
(48 mm)
2-15/16”
(75 mm)
3.4”
(86 mm)
1-27/32”
(47 mm)
H1F-15
2”
(51 mm)
3-1/8”
(79 mm)
3.6”
(92 mm)
1-31/32”
(50 mm)
H1F-16
2-1/4”
(57 mm)
3-1/2”
(89 mm)
4”
(103 mm)
2-1/4”
(57 mm)
H1F-18

 

C2T Stopy-Type & Flange Couplings

Bar
Diameter
Outside
Diameter
Overall
Length
Stop-Type
Part Number
Flange Coupling
Flange Size Part Number
1/4”
(6.4 mm)
1/2”
(13 mm)
7/8”
(22 mm)
C2T-02
3/8”
(9.5 mm)
3/4”
(19 mm)
1-1/2”
(38 mm)
C2T-03 2” x 2”
(51 x 51 mm)
C2D-03
1/2”
(13 mm)
3/4”
(19 mm)
1-1/2”
(38 mm)
C2T-04 2” x 2”
(51 x 51 mm)
C2D-04
5/8”
(16 mm)
1”
(25 mm)
1-3/4”
(45 mm)
C2T-05 2” x 2”
(51 x 51 mm)
C2D-05
3/4”
(19 mm)
1-1/8”
(29 mm)
2”
(51 mm)
C2T-06 2” x 2”
(51 x 51 mm)
C2D-06
7/8”
(22 mm)
1-1/4”
(32 mm)
2-1/4”
(57 mm)
C2T-07 3” x 3”
(76 x 76 mm)
C2D-07
1”
(25 mm)
1-1/2”
(38 mm)
3”
(76 mm)
C2T-08 3” x 3”
(76 x 76 mm)
C2D-08
1-1/8”
(29 mm)
1-5/8”
(41 mm)
3-1/2”
(89 mm)
C2T-09 3” x 3”
(76 x 76 mm)
C2D-09
1-1/4”
(32 mm)
1-7/8”
(48 mm)
3-3/4”
(95 mm)
C2T-10 3” x 3”
(76 x 76 mm)
C2D-10
1-3/8”
(35 mm)
2-1/8”
(54 mm)
4”
(102 mm)
C2T-11 3” x 3”
(76 x 76 mm)
C2D-11
1-1/2”
(38 mm)
2-1/4”
(57 mm)
5”
(127 mm)
C2T-12 3” x 3”
(76 x 76 mm)
C2D-12
1-3/4”
(45 mm)
2-1/2”
(64 mm)
5-1/2”
(140 mm)
C2T-14 4” x 4”
(102 x 102 mm)
C2D-14
1-7/8”
(48 mm)
2-7/8”
(73 mm)
6”
(152 mm)
C2T-15
2”
(51 mm)
3”
(76 mm)
6”
(152 mm)
C2T-16
2-1/4”
(57 mm)
3-1/2”
(89 mm)
8”
(203 mm)
C2T-18

R9F Hardened Washers

Bar
Diameter
Outside
Diameter
Inside
Diameter
Thickness Part
Number
1/4”
(6.4 mm)
5/8”
(16 mm)
9/32”
(7 mm)
1/16”
(1.5 mm)
R9F-02-436
3/8”
(9.5 mm)
1”
(25 mm)
7/16”
(11 mm)
5/64”
(2 mm)
R9F-03-436
1/2”
(13 mm)
1-1/16”
(27 mm)
9/16”
(14 mm)
9/64”
(3.56 mm)
R9F-04-436
5/8”
(16 mm)
1-3/4”
(45 mm)
11/16”
(17 mm)
9/64”
(3.6 mm)
R9F-05-436
3/4”
(19 mm)
1-15/32”
(37 mm)
13/16”
(21 mm)
9/64”
(3.6 mm)
R9F-06-436
7/8”
(22 mm)
1-3/4”
(45 mm)
15/16”
(24 mm)
5/32”
(4 mm)
R9F-07-436
1”
(25 mm)
2”
(51 mm)
1-1/8”
(29 mm)
5/32”
(4 mm)
R9F-08-436
1-1/8”
(29 mm)
2-1/4”
(57 mm)
1-1/4”
(32 mm)
5/32”
(4 mm)
R9F-09-436
1-1/4”
(32 mm)
2-1/2”
(64 mm)
1-3/8”
(35 mm)
5/32”
(4 mm)
R9F-10-436
1-3/8”
(36 mm)
2-3/4”
(70 mm)
1-1/2”
(38 mm)
5/32”
(4 mm)
R9F-11-436
1-1/2”
(38 mm)
3”
(76 mm)
1-5/8”
(41 mm)
5/32”
(4 mm)
R9F-12-436
1-3/4”
(43 mm)
3-3/8”
(86 mm)
1-7/8”
(48 mm)
7/32”
(5.6 mm)
R9F-14-436
1-7/8”
(48 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2”
(51 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2-1/4”
(57 mm)
4”
(102 mm)
2-3/8”
(60 mm)
9/32”
(7 mm)
R9F-18-436

R8M Beveled Washers

Bar
Diameter
Outside
Diameter
Inside
Diameter
Thickness Part
Number
1/4”
(6.4 mm)
5/8”
(16 mm)
9/32”
(7 mm)
1/16”
(1.5 mm)
R9F-02-436
3/8”
(9.5 mm)
1”
(25 mm)
7/16”
(11 mm)
5/64”
(2 mm)
R9F-03-436
1/2”
(13 mm)
1-1/16”
(27 mm)
9/16”
(14 mm)
9/64”
(3.56 mm)
R9F-04-436
5/8”
(16 mm)
1-3/4”
(45 mm)
11/16”
(17 mm)
9/64”
(3.6 mm)
R9F-05-436
3/4”
(19 mm)
1-15/32”
(37 mm)
13/16”
(21 mm)
9/64”
(3.6 mm)
R9F-06-436
7/8”
(22 mm)
1-3/4”
(45 mm)
15/16”
(24 mm)
5/32”
(4 mm)
R9F-07-436
1”
(25 mm)
2”
(51 mm)
1-1/8”
(29 mm)
5/32”
(4 mm)
R9F-08-436
1-1/8”
(29 mm)
2-1/4”
(57 mm)
1-1/4”
(32 mm)
5/32”
(4 mm)
R9F-09-436
1-1/4”
(32 mm)
2-1/2”
(64 mm)
1-3/8”
(35 mm)
5/32”
(4 mm)
R9F-10-436
1-3/8”
(36 mm)
2-3/4”
(70 mm)
1-1/2”
(38 mm)
5/32”
(4 mm)
R9F-11-436
1-1/2”
(38 mm)
3”
(76 mm)
1-5/8”
(41 mm)
5/32”
(4 mm)
R9F-12-436
1-3/4”
(43 mm)
3-3/8”
(86 mm)
1-7/8”
(48 mm)
7/32”
(5.6 mm)
R9F-14-436
1-7/8”
(48 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2”
(51 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2-1/4”
(57 mm)
4”
(102 mm)
2-3/8”
(60 mm)
9/32”
(7 mm)
R9F-18-436

To achieve full strength of the nut, beveled washers must be used in conjunction with a hardened washer.

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