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Mini-Series Post Holders![]()
Swivel-Base Post Holders MSL3 1/4" (M6) Slot Pedestal-Base Post Holders MPH25 MBA1 MSH1.5 #4 (M3) Slot MPH50 MSC2 Clamping Fork MSC3 Clamping Fork MSC1 Clamping Fork Pedestal Post Holder Base and Clamping Forks Related Items ![]() Please Wait ![]() Click to Enlarge View Metric Product List
Swivel base allows access to surrounding mounting holes. ![]() Click for Details MPH50 Post Holder threads onto the MBA1 Post Holder Base. Features
Designed to mount our Ø6 mm posts, Thorlabs' Mini-Series post holders are the ideal solution for mounting Mini-Series components in a compact assembly. Thorlabs offers two types of Mini-Series post holders: swivel base and pedestal base. Our swivel-base post holders feature a knurled aluminum, hex-locking thumbscrew for securing the post. The base swivels 360° to allow for maximum flexibility when placing parts on a breadboard or optical table. The swivel-base post holders have two mounting slot options to allow for compatibility with both Mini-Series and standard breadboards: the MSH post holders feature a slot for 4-40 (M3) cap screws, and the MSL post holders have a slot for 1/4"-20 (M6) cap screws. The pedestal-base post holders use a rotatable flexure clamp with 5/64" (2.0 mm) hex to secure the post. The flexure clamp can be rotated 360° for easy access to the locking screw. The pedestal base of the post holders is compatible with our Mini-Series clamping forks (sold below) which have #4 (M3), #8 (M4) or 1/4" (M6) slots. For additional mounting flexibility, the MPH post holders are also directly compatible with the MBA1 Mini-Series post holder base (sold below). The MBA1 is secured to the post holder using threads for added stability and features a slot for 8-32 (M4) cap screws to secure the MPH post holders to a Mini-Series breadboard.
![]() ![]() Click for Details Mounting Features
![]() ![]() Click for Details Mounting Features
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Iris and MK05 with lens mounted with 1/2" separation using MPH25 post holders with MBA1 bases (available below).
Thorlabs’ MPH post holders are designed to be as compact as possible to accommodate tight setups. The diameter of the post holder allows for two posts to be mounted in contact with each other using adjacent holes on an imperial or a metric Mini-Series breadboard with 1/2" or 12.5 mm spacing (see photo to the far right). To use the minimum height of a post, these post holders have a through hole that allows the post to rest on the breadboard. These post holders feature a flexure clamp with a 5/64" (2.0 mm) hex for securing our Ø6 mm posts. The flexure clamp rotates 360° so that the locking screw can be easily accessed in any orientation or moved out of the way when mounting two posts side-by-side. The vertical translation of the post locks before the rotation of the flexure clamp locks, making it possible to fine-tune the rotation after locking the height. Once the locking screw is fully tightened, the flexure clamp will no longer rotate. Each post holder has a pedestal base allowing them to be secured to an optical table or breadboard with our Mini-Series clamping forks (sold below). The clamping forks provide either a #4 (M3), #8 (M4), or 1/4" (M6) mounting slot. Alternatively, we offer the MBA1 (sold below), ideal for saving space in compact systems, which screws directly into the bottom of the post holder and provides a #8 (M4) mounting slot ideal for use with Mini-Series breadboards. ![]() ![]() Click for Details MBA1 Post Holder Base threaded onto MPH50 Post Holder.
![]() ![]() Click to Enlarge An MSC2 Clamping Fork secures a Mini-Series pedestal post to a breadboard with 1/4"-20 tapped holes.
Our clamping forks are designed to provide exceptional clamping force when used with our Ø12 mm pedestal posts or our pedestal-base post holders (sold above). These clamping forks provide flexibility for building setups that combine Mini-Series components and our larger range of optomechanics offerings. The MSC1 and MSC2 are made from anodized aluminum, while the MSC3 is made from precipitation hardened 17-4PH stainless steel to provide a more uniform clamping force. Designed to be used with the Mini-Series breadboards, the MSC1 and MSC3 are compatible with a 4-40 (M3) and 8-32 (M4) cap screw, respectively. The MSC2 slot accepts 1/4"-20 (M6) cap screws, thus enabling the inclusion of Mini-Series posts and components into setups on standard breadboards and optical tables in addition to mini-series breadboards. Each clamping fork features landing pads on the bottom surface to maximize stability when using a washer and cap screw to lock down a post with the fork. Please note that significant overtightening of clamping forks can deform the surface of an optical table, which can cause misalignment of components. | |||||||||||||||||
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