Create an Account  |   Log In

View All »Matching Part Numbers


Your Shopping Cart is Empty
         

16 mm Cage System Construction Rods


  • Building Blocks for 16 mm Cage System
  • Ø4 mm Precision-Machined Stainless Steel Rods
  • Ideal for Complex Optical Structures

SRSCA

Rod Adapter

SR Series Cage Rods

Cage Rod
Cross Coupler

S1A

For Details,
See Construction Tab Below

S3A

Related Items


Please Wait

The Cage Assembly System provides a convenient way to construct large optomechanical systems with an established line of precision-machined building blocks designed for high flexibility and accurate alignment. This page offers cage assembly rods for our 16 mm Cage System. For 30 and 60 mm Cage Systems, please see our ER construction rods page. Please see the Cage Overview tab for more details on this widely adopted construction standard.

Standard Assembly Rods
Our precision-ground cage assembly rods are basic building blocks used to construct optical systems. These rods are most commonly used as precision guides for our cage assembly plates and have a 4 mm diameter for 16 mm cage systems. Each rod has a removable 4-40 stud in each end, and all rods are designed to be stackable. An infinite array of systems can be assembled when used in conjunction with our cage plates and lens tubes. Please see the Construction tab for more information on building cage systems.

Cage Couplers and Adapters
The 16 mm cage rod adapters offered here enable the easy addition or removal of components from cage assemblies. The SRSCA cage adapter allows two 4-40 internally threaded components to be connected using Ø4 mm SR rods. The S1A cage rod coupler provides a method of connecting rods at 90° angles.

Swivel Connector
The S3A swivel connector can be used to connect cage assemblies at arbitrary angles. These parts are made from stainless steel and provide an extremely rigid structure.

SRSCA 1D Construction
Click to Enlarge

SRSCA 1D Construction

Cage Rod Adapter

The SRSCA SR rod adapter allows for the end-to-end joining of two SR rods. It has an internal bore on one end that accepts Ø4 mm SR series rods. To join two rods, position the end of one rod inside the SRSCA, and lock it into place using the locking setscrew. Thread the other end of the SRSCA into the other rod (see photo at right).

3D Construction Using Cage Systems

ER90 3D Construction
ER90C Right Angle Rod with
ER90L Spacer Rod

These assembly rods are essential components when configuring cage systems in complex, multi-dimensional structures.

For 30 and 60 mm cage systems, the ER90C right angle rods offer a fixed 90° connection to a cage system (see photo to left). Using the ER90A spacer rod for 30 mm cage systems and the ER90L spacer rod for 60 mm cage systems will ensure center-to-center spacing. Alternatively, a cage cube can be used to create a rigid 90° connection.

C3A 3D Construction
Click to Enlarge

C3A Swivel Connector Rods

Our swivel connectors can be configured to any arbitrary angle before being locked into place. The C3A connector, for 30 and 60 mm cage systems, is pictured to the right. We also offer the S3A connector for 16 mm cage systems.

When constructing complex optomechanical cage assemblies, it is sometimes necessary to couple one cage subsystem to another. Between the S1A cross coupler for 16 mm cages, the C1A cross coupler for 30 and 60 mm cage systems, and the C2A swivel coupler with 180° swing, virtually any configuration can be achieved.

ERSCA 3D Construction
Click to Enlarge
View Imperial Product List
Item #QtyDescription
Imperial Product List
ERSCA-P41Rod Adapter for Ø6 mm ER Rods, 4 Pack
ST1XY-S1XY Translator with Micrometer Drives
C4W130 mm Cage Cube
ER4-P41Cage Assembly Rod, 4" (101.6 mm) Long, Ø6 mm, 4 Pack
View Metric Product List
Item #QtyDescription
Metric Product List
ERSCA-P41Rod Adapter for Ø6 mm ER Rods, 4 Pack
ST1XY-S/M1XY Translator with Micrometer Drives, Metric
C4W130 mm Cage Cube
ER4-P41Cage Assembly Rod, 4" (101.6 mm) Long, Ø6 mm, 4 Pack
ERSCA Adapters with ST1XY-S Mount and C4W Cage Cube

The SRSCA SR rod adapters and ERSCA ER rod adapters are also useful for 3D construction in 16 mm cage systems or 30 and 60 mm cage systems, respectively. They can be used to connect two internally threaded cage components with SR (SRSCA) or ER (ERSCA) rods, and allow components to be easily added or removed from setups without causing misalignment. In the application shown to the left, four ERSCA adapters are used with ER rods to connect a 30 mm cage cube to an ST1XY-S micrometer-driven, XY translation mount. The four cage rods are directly threaded into four holes in the cage cube. Since the other end of each cage rod is internally threaded, they cannot be directly threaded into the translation mount. Instead, the threaded side of the ERSCA adapter is connected to the ST1XY-S translation mount. Each cage rod slides into the other side of each adapter and is secured in place with the setscrew.

Application Idea

The cage assembly components offered here can be used to couple 16 mm, 30 mm, and 60 mm cage systems. The following tables correspond to either the imperial or metric item list for the setup below.

Item #QtyDescription
Imperial Product List
SRM05116 mm Cage Rotation Mount
SR14Mini Series Cage Assembly Rod, Ø4 mm, 1" Long
SR44Mini Series Cage Assembly Rod, Ø4 mm, 4" Long
S1A4Cage Rod Cross Coupler
SP03116 mm Clear Aperture Cage Plate
SP05130 mm to 16 mm Cage Adapter Plate
ER4-P41Cage Assembly Rod, Ø6 mm, 4" Long, Pack of 4
TR61Ø1/2" Optical Post, 6" Long
Item #QtyDescription
Metric Product List
SRM05116 mm Cage Rotation Mount
SR14Mini Series Cage Assembly Rod, Ø4 mm, 1" Long
SR44Mini Series Cage Assembly Rod, Ø4 mm, 4" Long
S1A4Cage Rod Cross Coupler
SP03116 mm Clear Aperture Cage Plate
SP05/M130 mm to 16 mm Cage Adapter Plate, Metric
ER4-P41Cage Assembly Rod, Ø6 mm, 4" Long, Pack of 4
TR150/M1Ø12.7 mm Optical Post, 150 mm Long
Basic Square Cage Plate
An example of the standard cage
plate measurements determining
cage system compatibility.

Cage System Overview

The Cage Assembly System provides a convenient way to construct large optomechanical systems with an established line of precision-machined building blocks designed for high flexibility and accurate alignment.

16 mm, 30 mm, and 60 mm Cage System Standards

Thorlabs offers three standards defined by the center-to-center spacing of the cage assembly rods (see image to right). The 16 mm cage, 30 mm cage, and 60 mm cage standards are designed to accomodate Ø1/2", Ø1", and Ø2" optics, respectively. Specialized cage plates that allow smaller optics to be directly inserted into our larger cage systems are also available. All locking setscrews used in these cage plates are standard 4-40 setscrews, which use a 0.05" hex key.

Standard Threads

The flexibility of our Cage Assembly System stems from well-defined mounting and thread standards designed to directly interface with a wide range of specialized products. The three most prevalent thread standards are our SM05 Series (0.535"-40 thread), SM1 Series (1.035"-40 thread), and SM2 Series (2.035"-40 thread), all of which were defined to house the industry's most common optic sizes. Essential building blocks, such as our popular lens tubes, directly interface to these standards.

Standard Cage System Measurements
Cage System 16 mm 30 mm 60 mm
Thread Series SM05 SM1 SM2
Rod to Rod Spacing 16 mm (0.63") 30 mm (1.18") 60 mm (2.36")
Total Length 25 mm (0.98") 41 mm (1.60") 71.1 mm (2.8")
Cage Components
Cage Rods 16 mm These rods are used to connect cage plates, optic mounts, and other components in the cage system. The SR Series Cage Rods are compatible with our 16 mm cage systems, while the 30 mm and 60 mm cage systems use ER Series Cage Rods.
30 mm
60 mm
Cage Plates 16 mm These serve as the basic building blocks for a cage system. They may have SM-threaded central bores, smooth bores sized for industry standard optics or to accommodate the outer profile of our SM Series Lens Tubes, or specialized bores for other components such as our FiberPorts.
30 mm
60 mm
Optic Mounts 16 mm Thorlabs offers fixed, kinematic, rotation, and translation mounts specifically designed for our Cage Systems.
30 mm
60 mm
Cage Cubes 16 mm These cubes are useful for housing larger optical components, such as prisms or mirrors, or optics that need to sit at an angle to the beam path, such as beamsplitters. Our cage cubes are available empty or with pre-mounted optics.
30 mm
60 mm
Post and Breadboard Mounts and Adapters Mounting options for cage systems can be found on our Cage System Construction pages. Cage Systems can be mounted either parallel or perpendicular to the table surface.
Size Adapters Cage System Size Adapters can be used to integrate components from different cage system and threading standards.
Specialized Components Thorlabs also produces specialized cage components, such as Filter Wheels, a HeNe Laser Mount, and a FiberPort Cage Plate Adapter, allowing a wide range of our products to be integrated into cage-mounted optical systems. Explore our Cage Systems Visual Navigation Guide to see the full range of Thorlabs' cage components.

Please Give Us Your Feedback
 
Email Feedback On
(Optional)
Contact Me:
Your email address will NOT be displayed.
 
 
Please type the following key into the field to submit this form:
Click Here if you can not read the security code.
This code is to prevent automated spamming of our site
Thank you for your understanding.
  
 
Would this product be useful to you?   Little Use  1234Very Useful

Enter Comments Below:
 
Characters remaining  8000   
Posted Comments:
Poster:pmintun
Posted Date:2014-10-21 11:07:56.42
Are the cage systems constructed out of nonmagnetic materials?
Poster:besembeson
Posted Date:2014-10-23 10:14:18.0
Response from Bweh: These are made from 303 stainless steel and aluminum (S1A) so they are technically non-magnetic. The ER rods show very weak magnetism after the machining process though. If you desire completely non-magnetic rods, I can look into this for you.

SR Assembly Rods for 16 mm Cage Systems

  • For use with 16 mm Compact (Mini Series) Cage Systems
  • Available in Lengths Ranging from 1/4" to 8"
  • Ø4 mm Precision-Ground Stainless Steel Rods
  • 4-40 Removable Setscrew at Both Ends
  • ±0.005" Rod Length Tolerance (Threaded Ends Not Included)

These 16 mm cage rods are made from stainless steel and are designed for use with our Mini Series Components. The 4-40 threaded stud at each end of the cage rod can be removed, leaving a 4-40 tapped hole. This allows multiple cage rods to be connected end-to-end.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
SR025 Support Documentation
SR025Customer Inspired!Mini Series Cage Assembly Rod, 1/4" (6.4 mm) Long, Ø4 mm, Qty. 1
$6.18
Today
SR05 Support Documentation
SR05Mini Series Cage Assembly Rod, 1/2" (12.7 mm) Long, Ø4 mm, Qty. 1
$5.67
Today
SR1 Support Documentation
SR1Mini Series Cage Assembly Rod, 1" (25.4 mm) Long, Ø4 mm, Qty. 1
$6.18
Today
SR1.5 Support Documentation
SR1.5Mini Series Cage Assembly Rod, 1.5" (38.1 mm) Long, Ø4 mm, Qty. 1
$6.70
Today
SR2 Support Documentation
SR2Mini Series Cage Assembly Rod, 2" (50.8 mm) Long, Ø4 mm, Qty. 1
$7.21
Today
SR3 Support Documentation
SR3Mini Series Cage Assembly Rod, 3" (76.2 mm) Long, Ø4 mm, Qty. 1
$7.73
Today
SR4 Support Documentation
SR4Mini Series Cage Assembly Rod, 4" (101.6 mm) Long, Ø4 mm, Qty. 1
$8.24
Today
SR6 Support Documentation
SR6Mini Series Cage Assembly Rod, 6" (152.4 mm) Long, Ø4 mm, Qty. 1
$9.27
Lead Time
SR8 Support Documentation
SR8Mini Series Cage Assembly Rod, 8" (203.2 mm) Long, Ø4 mm, Qty. 1
$12.40
Lead Time

SR Rod Adapter for 16 mm Cage Systems

  • Internally Accepts Ø4 mm SR Series Rods
  • 4-40 Threaded Stud and 2-56 Locking Setscrew with 5/64" (2.0 mm) Hex
  • Easily Add or Remove Components from Cage Assemblies
  • Also Available in Packs of Four

The SRSCA is a stud adapter that will allow any cage assembly to be easily separated when adding or removing components. This adapter has an internal bore on one end that accepts a Ø4 mm SR series rod with its setscrew removed. The mounting stud collar must be tightened using the locking setscrew to hold the SR rod in place. On the other side of the adapter, there is an externally 4-40 threaded stud that can be threaded into the end of another SR series rod or 4-40 internally threaded cage component.

As seen in the images below, the SRSCA is particularly useful for connecting two internally 4-40 threaded cage system components with Ø4 mm SR series cage rods.

Thread the SR series cage rods directly into the KCB05 16 mm Right-Angle Kinematic Cage Mount as shown above. Then thread four SRSCA adapters into the SC6W Compact 6-Way Cage Cube. Finally, insert the Ø4 mm SR series rods into the internal bores on the SRSCA adapters and secure using the 2-56 locking setscrews.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
SRSCA Support Documentation
SRSCARod Adapter for Ø4 mm SR Rods
$14.40
Today
SRSCA-P4 Support Documentation
SRSCA-P4NEW!Customer Inspired!Rod Adapter for Ø4 mm SR Rods, 4 Pack
$57.60
Today

SR Rod End Swivel Connector for 16 mm Cage Systems

  • 180° of Total Swing
  • Ideal for Near-Normal Angles
  • Lockable Design for Greater Rigidity
  • Ø4 mm Precision-Ground Stainless Steel
  • 2-56 Hex Locking Screw

The S3A swivel connector allows 16 mm SR cage assembles to be connected at a range of angles up to ±90° from the system normal. Made from stainless steel, these lockable couplers result in very rigid structures.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
S3A Support Documentation
S3ASR Rod End Swivel Connector, Set of 4
$55.60
Today

SR Rod Cross Coupler for 16 mm Cage Systems

  • Connect Ø4 mm SR Rods at 90°
  • Two 5/64" (2 mm) Hex Screws Provide Clamping Force
  • Flexure Clamping Design

The S1A cross coupler is designed for Thorlabs' Ø4 mm, SR series of cage rods. This coupler provides a method to attach a terminating SR rod at 90° to an SR rod that is passed through the clamp. Using two cap screws, the flexure design clamps onto both cage rods. The S1A is ideal for constructing 3D cage structures based on Thorlabs' 16 mm cage system, as shown in the example at right (for details,see Construction tab).

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
S1A Support Documentation
S1A16 mm Cage Rod Cross Coupler
$12.40
Today
Log In  |   My Account  |   Contact Us  |   Careers  |   Privacy Policy  |   Home  |   FAQ  |   Site Index
Regional Websites: West Coast US | Europe | Asia | China | Japan
Copyright 1999-2016 Thorlabs, Inc.
Sales: 1-973-300-3000
Technical Support: 1-973-300-3000


High Quality Thorlabs Logo 1000px:Save this Image