Pedestal Base Adapters
![](https://www.thorlabs.us/Images/GuideImages/1752_PedPostAdpt_9.jpg)
- Ideal for Building High Density Tabletop Optical Assemblies
- Adapters for Ø1" and Ø1.5" Posts
- Converts Pillar Post to Pedestal Style Post
Four Magnets Hold Base in Place
BE1R
Ø1.25" Magnetic Pedestal Base Adapter
PB4R
Ø1.85" Magnetic Pedestal Base Adapter
PB4
Ø1.85" Pedestal Base Adapter
Magnet in Base Provides Stability During Alignment
Ø1" Post with BE1 Post Adapter and CF125 Clamp
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![1" and 1.5" Bases and Clamps](https://www.thorlabs.us/images/TabImages/Post_Base_Clamp_A2-250.jpg)
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Ø1" and Ø1.5" Posts can be Secured to an Optical Table Using Pedestal Base Adapters and Clamping Forks
Features
- Adapters for Converting Ø1/2" Post Holders, Ø1" Post Extensions and Ø1.5" Posts into Pedestal-Style Posts
- Large Bottom Relief Cuts in Base for Exceptional Stability
- Magnetic Pedestal Base Adapter Provides Stability During Alignment for Temporary Setups
Ø1" Pedestal Base Adapters
The BE1(/M) and BE1R(/M) fasten directly to a Ø1" post extension or a Ø1/2" post holder via the provided 1/4"-20 (M6) stud, converting a standard post or post holder into a pedestal-style mount. Once an adapter is fastened, these Ø1" pedestal configurations are directly compatible with our CF125, CF125C(/M), CF175, and CF175C(/M) solid stainless steel clamping forks, which provide for the greatest overall positional flexibility when mounting to an optical table. For additional stability in temporary setups, the BE1R(/M) base provides a high-strength magnet in the base.
Ø1.5" Pedestal Base Adapter
The PB4(/M) and PB4R(/M) fasten directly to a Ø1.5" post via the provided 1/4"-20 (M6) stud, converting a standard post into a pedestal-style post. This pedestal configuration is directly compatible with the PF85B, PF125B, or PF175B clamping fork which provides high positional flexibility when mounting to an optical table. The PB4R(/M) adapter has four high strength magnets in the base that are sufficiently strong to securely hold the base in place without clamping to an optical table.
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![](https://www.thorlabs.us/images/TabImages/Magnetic_Pedestal_Base_A1-150.jpg)
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The BE1R has a magnet in the base for stability in temporary setups.
![PH2 on a BE1 Base](https://www.thorlabs.us/images/TabImages/Clamping_Fork_A3-150.jpg)
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A CF125 fork is used to secure a Ø1/2" post holder to an optical table with a BE1 base.
- BE1(/M) and BE1R(/M) Adapters Convert Standard Ø1/2" Post Holders and Ø1" Posts into Pedestal-Style Mounts
- Clamping Fork or CL8 Table Clamp Secures Base to a Breadboard or Table
- 1/8" (3 mm) Hex Socket on Bottom for Tightening
- Machined Bottom Relief Cut for Added Stability
- BE1(/M) Adapter Available in Packs of Five
The BE1(/M) and BE1R(/M) pedestal base adapters feature a 1/4"-20 (M6)-threaded stud that fit into the bottom of our standard Ø1/2" post holders or Ø1" posts to convert them into pedestal-style mounts for added stability. The BE1R(/M) adapters have a magnet in the base that is sufficiently strong to securely hold the base in place without clamping to an optical table (see photo to the right). Made from solid 303 stainless steel with a 1.25" (31.8 mm) outer diameter, this adapter allows standard Ø1" posts to be used with clamping forks, and can be tightened onto the post or postholder using a 1/8" (3 mm) hex or ball driver.
The BE1(/M) is available in a pack of five for ease of ordering.
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- Mount 1/4"-20 (M6) Tapped Components in an Arbitrary Position 0.24" (6.1 mm) Above the Breadboard
- PF85B, PF125B, or PF175B Clamping Fork or CL8 Table Clamp Secures Base to a Breadboard or Table
- 1/8" (3 mm) Hex Socket on Bottom for Tightening
- Machined Bottom Relief Cut for Added Stability
The PB4(/M) and PB4R(/M) pedestal base adapters feature a 1/4"-20 (M6)-threaded stud, which fits into the bottom of our Ø1.5" posts to convert them into pedestal-style mounts. They are manufactured using solid 303 stainless steel with a 1.85" (47.0 mm) outer diameter. The PB4(/M) can be tightened onto the post or postholder using a 1/8" (3 mm) hex key or ball driver, while the PB4R(/M) has a 3/16" (5 mm) hex socket. The PB4R(/M) adapter also has four high strength magnets in the base (seen in the family image above) that are sufficiently strong to securely hold the base in place without clamping to an optical table. To secure the base, a a CL8 table clamp or a PF85B, PF125B, or PF175B clamping fork (shown in the photo to the right) can be used. However, using these items will restrict the width of the component being mounted to a maximum of 1.5".