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Spin-Lock Rock Anchor Head Data
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The Williams Spin-Lock anchor assembly gives full 300° 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. |
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Type A
Short Shell
& Cone |
Drill
Hole
Dia. |
Bolt Dia. &
Thread
Form |
Standard
Cone |
Standard
MAL Shell |
Overall
Ass'y
Length |
Length &
Part No. |
Length &
Part No. |
1-1/4"
(32 mm) |
1/2" - 13 NC
(12 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) |
1-5/8"
(41 mm) |
1/2" - 13NC
(12mm) |
1-3/8"
SC-158-4 |
7/8"
SS-158 |
3-3/4"
(95.25 mm) |
5/8" - 11 NC
(16 mm) |
1-3/8"
SC-158-5 |
7/8"
SS-158 |
3-3/4"
(95.25 mm) |
3/4" - 10 NC
(20 mm) |
1-1/2"
SC-158-6 |
7/8"
SS-158 |
4-1/16"
(103.2 mm) |
7/8" - 9 NC
(22 mm) |
1-1/2"
SC-158-7 |
7/8"
SS-158 |
4-1/4"
(108.0 mm |
1" - 8 NC
(25 mm) |
1-1/2"
SC-158-8 |
7/8"
SS-158 |
4-1/4"
(108.0 mm) |
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Type B
Long Shell
& Cone |
Drill
Hole
Dia. |
Bolt Dia. &
Thread
Form |
Long
Cone |
Long MAL
Shell |
Overall
Ass'y
Length |
Length &
Part No. |
Length &
Part No. |
1-3/4"
(44 mm) |
3/4" - 10 NC
(20 mm) |
3-3/4"
LC-158-6 |
3-3/4"
LS-175 |
8"
(203.2 mm) |
7/8" - 9 NC
(22 mm) |
3-3/4"
LC-158-7 |
3-3/4"
LS-175 |
8-1/4"
(209.6 mm) |
1" - 8 NC
(25 mm) |
3-3/4"
LC-158-8 |
3-3/4"
LS-175 |
8-1/4"
(209.6 mm) |
1-7/8"
(48 mm) |
3/4" - 10 NC
(20 mm) |
3-3/4"
LC-158-6 |
3-3/4"
LS-178 |
8"
(203.2 mm) |
7/8" - 9 NC
(22 mm) |
3-3/4"
LC-158-7 |
3-3/4"
LS-178 |
8-1/4"
(209.6 mm) |
1" - 8 NC
(25 mm) |
3-3/4"
LC-158-8 |
3-3/4"
LS-178 |
8-1/4"
(209.6 mm) |
2"
(51 mm) |
1" - 8 UN
(25mm) |
4"
LC-200 |
4"
LS-200 |
9"
(228.6 mm) |
1-1/8" - 7 UN
(30 mm) |
4"
LC-200 |
4"
LS-200 |
9-1/4"
(235.0 mm)
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2-1/4"
(57 mm) |
1-1/8" - 7 NC
(30 mm) |
4"
LC-200 |
4"
LS-225 |
9-1/4"
(235.0 mm)
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1-1/4"-7NC
(32mm) |
4"
LC-200 |
4"
LS-225 |
9-5/16"
(236.5 mm)
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2-1/2"
(63 mm) |
1-1/8" - 7 NC
(30 mm) |
4"
LC-250 |
4"
LS-250 |
9-1/4"
(235.0 mm)
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1-1/4" - 7 NC
(32 mm) |
4"
LC-250 |
4"
LS-250 |
9-3/8"
(238 mm)
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1-3/8" - 8 UN
(35 mm) |
4"
LC-250 |
4"
LS-250 |
9-1/2"
(241.3 mm)
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3"
(76 mm) |
1-3/8" - 8 UN
(32mm) |
5-1/2"
LC-300 |
5-1/2"
LS-300 |
12-1/2"
(317.5 mm)
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1-1/2" - 6 NC
(38 mm) |
5-1/2"
LC-300 |
5-1/2"
LS-300 |
12-5/8"
(320.7 mm) |
1-3/4" - 5 NC
(45 mm) |
5-1/2"
LC-300 |
5-1/2"
LS-300 |
12-7/8"
(327.0 mm)
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Type C
Long Shell &
Cone with Flange |
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Drill
Hole
Dia. |
Bolt Dia. &
Thread Form |
Long Cone
w/ Flange |
Long MAL
Shell |
Overall
Ass'y
Length |
Length &
Part No. |
Length &
Part No. |
1-3/4"
(44 mm) |
3/4" - 10 NC
(20 mm) |
4-1/4"
LCF-175-6 |
3-3/4"
LS-175 |
9"
(228.6 mm) |
7/8" - 9 NC
(22 mm) |
4-1/4"
LCF-175-7 |
3-3/4"
LS-175 |
9-1/16"
(230.2 mm) |
1" - 8 NC
(25 mm) |
4-1/4"
LCF-175-8 |
3-3/4"
LS-175 |
9-3/16"
(233.4 mm) |
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-225-11 |
4"
LS-225 |
10-1/4"
(260.4 mm) |
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" - 5 NC
(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"
(384.2 mm) |
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Coupled Head Assemblies |
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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 N.C. bar into the head assembly and the All-Thread tension rod (typically Grade 75 or 150 KSI) is attached to the other end of the coupling.
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 Williams Form Engineering Corp. All rights reserved. |
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