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30 and 60 mm Cage System Construction Rods


  • Building Blocks for 30 and 60 mm Cage Systems
  • Ø6 mm Precision-Machined Stainless Steel Rods
  • Ideal for Complex Optical Structures

ER4E

ER2

ER1

For 30 mm and
60 mm Cage Systems

C2A

Swivel Coupler

ERSCA

Cage Rod
Adapter

C3A

Swivel Connector

ER90C

30 mm

ER90C

ER90C

ER90A

Spacer Rod

Right Angle Rods and Spacer

Related Items


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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 30 and 60 mm Cage Systems. For 16 mm Cage Systems, please see our SR construction rods page. Please see the Cage Overview tab for more details on this widely adopted construction standard.

Cage Rod Adapters

ERSCA 1D Construction
Click to Enlarge
ERSCA ER Rod Adapter
ERSCA 1D Construction
Click to Enlarge
ERSCA 1D Construction

The ERSCA ER rod adapter allows for the end-to-end joining of two ER rods. It has an internal bore on one end that accepts Ø6 mm ER series rods. To join two rods, position the end of one rod inside the ERSCA, and lock it into place using the locking setscrew. Thread the other end of the ERSCA 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" 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" 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

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 below). 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.


An example of the standard cage plate measurements determining cage system compatibility.
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.

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Posted Comments:
Poster:jpaufiqu
Posted Date:2017-06-01 16:04:30.843
Hi, SS4S025 are too short to ensure a good stiffness of the assembly using the 90° rods. That is probably why you deliver slightly longer screws with the 90° parts (by about 0.15"?). Offering these longer setscrews as well as separate items would be very useufl (i.e. setscrews 4-40 with a length about 0.15" longer than usual; double-ended to simplify). Especially once the setup is re-used in a different context, the longer setscrews provided will get lost (i.e. used in the wrong place and not anymore available for this critical use).
Poster:nbayconich
Posted Date:2017-06-13 05:23:47.0
Thank you for contacting Thorlabs. We do have setscrews available in longer lengths 4-40 x 3/8" long & 4-40 x 1/2" long as component pieces. Currently we have not seen the demand to offer these as stock options but we can provide these upon request. I will contact you directly with more information.
Poster:
Posted Date:2016-07-12 11:24:26.17
Hello Thorlabs, are long rods supposed to be perfectly straight? What is the tolerance on straightness? I've received two 24" long rods with about 0.1" bend over the whole length. They may have been bent during shipping (especially if packed with other items, heavy ones).
Poster:ludoangot
Posted Date:2016-03-18 16:43:33.157
On the rods I have (ER6, ER8, ...), the holes on each end of the rods are deeper than the female thread length. In an application I need the thread to go deeper than the current length. Can I safely tap the thread further? What is the diameter of the hole beyond the threads (I can't find it documented in the drawings or description)?
Poster:besembeson
Posted Date:2016-03-18 09:04:04.0
Response from Bweh at Thorlabs USA: The #4-40 x 1/4" set screw is designed to protrude up to 0.1" from the end of the rod to the cup point so the threaded whole is 0.15" deep to the end of the set screw SS4S025. You can remove the set screw and carefully drill appropriate hole and tap further as desired.
Poster:loo
Posted Date:2016-03-02 10:57:00.017
It would be nice if the rods had a through hole to get extra torque with a hexkey, since using pliers will damage the rods beyond smooth sliding.
Poster:besembeson
Posted Date:2016-03-02 11:34:27.0
Response from Bweh at Thorlabs USA: Thanks for your feedback. We will be reviewing this. We may also consider providing a special strip-free wrench/pliers for such purposes.
Poster:smid
Posted Date:2016-01-27 15:14:19.387
We have made some precise measurements in laboratory condition with you ER series stainless steel rods. We would like to compare theoretical thermal expansion coefficient (CTE) of the rods to the measurement in our cage assembly to make the estimation of the possible errors. We estimate that your CTE lies somewhere between the general stainless steel with 1e-5/m/K and the invar stainless stell with 1e-6/m/K. Could you please confirm or send me a private message and provide the more detailed information? Thank you very much.
Poster:jlow
Posted Date:2016-02-01 09:40:43.0
Response from Jeremy at Thorlabs: The ER series cage rods is made from 303 stainless steel. The linear CTE is roughly around 17.3 µm/m/K.
Poster:oliver.larkin
Posted Date:2015-07-07 12:50:36.387
You may want to consider threading all four holes in your ERSCA adapters as often the two screws end up facing a direction where it is difficult to reach them and there is no way to adjust this as the final position depends on the tapping/threading. This would allow moving the grub screws to accessable holes whilst also allowing two free to tighten the items.
Poster:besembeson
Posted Date:2015-09-23 09:45:40.0
Response from Bweh at Thorlabs USA: Thanks for the feedback. I see the added mounting convenience. The only concern is that over time, the tapped holes may end up being stripped during tightening of the ERSCA.
Poster:nicolas.perlot
Posted Date:2014-10-30 13:30:49.85
We purchased ER Rod Swivel Couplers (C2A) but one of the three screws has a damaged (enlarged) hex socket and cannot be tightened with a hex key anymore. We would like to replace this damaged screw. Do you sell these small screws separately? If not, what are their specifications?
Poster:cdaly
Posted Date:2014-10-30 01:26:02.0
Response from Chris at Thorlabs: We do not sell this screw individually at the moment (2-56 x 1/4"). We will contact you directly and have some replacements sent out to you.
Poster:
Posted Date:2014-08-23 18:00:43.417
What do you think about offering the longer rods in Invar 36? I've sourced some for myself but of course it's not neatly machined with threaded ends like ER series. Invar's nice for things like resonator cavities where absolute lengths matter. I'd say having something like ER8I, ER12I and ER24I would be enough for most uses.
Poster:cdaly
Posted Date:2014-08-26 09:49:14.0
Response from Chris at Thorlabs: Thank you for your suggestion. We will discuss the possibility of including this product internally.
Poster:jrc3393
Posted Date:2014-02-20 01:47:20.5
What are the diameter and straightness for the 16mm, 30mm and 60mm cage rods? Also, what material are they made from?
Poster:cdaly
Posted Date:2014-02-25 04:16:40.0
Response from Chris at Thorlabs: Thank you for your inquiry. These specifications are somewhat close to proprietary information so I'm afraid I cannot post them here, but I will email you directly with the information.
Poster:avner
Posted Date:2013-06-17 15:05:12.097
What are the tolerances on the diameter for 16mm, 30mm and 60mm rods
Poster:jlow
Posted Date:2013-06-20 10:40:00.0
Response from Jeremy at Thorlabs: We will get in contact with you directly to provide this information.
Poster:iain
Posted Date:2013-05-31 11:43:15.923
Do you sell any cage construction rods with metric (M3 or M4) taps? It is difficult to get #4-40 screws of the correct length. Is the cage system compatible with metric posts such as MS05R/M or PM3/M?
Poster:tcohen
Posted Date:2013-06-06 11:52:00.0
Response from Tim at Thorlabs: You can use 6mm diameter posts for those with clearance holes but it will not be compatible with any of our cage system optomech with threads. We do sell screws separately as kits and in individual packs at http://www.thorlabs.de/Navigation.cfm?Guide_ID=2017. The part number for these setscrews is SS4S025.
Poster:cbrideau
Posted Date:2013-03-21 13:45:20.57
Really glad to finally see 4-packs of ER rods for sale! It makes ordering much simpler.
Poster:jlow
Posted Date:2013-03-27 10:28:00.0
Response from Jeremy at Thorlabs: Thank you for your feedback on this. We continually look at our sales statistics so that we can identify ordering trends. In this case a large number of people order four ER rods at a time. To make life easier we thought it would be good to offer them that way. It will also allow us to reduce packaging waste.

ER Assembly Rods for 30 mm and 60 mm Cage Systems

  • For use with Our Standard 30 mm and 60 mm Cage Systems
  • Available Individually in Lengths Ranging from 1/4" to 24"
  • Packs of Four Also Available for 1/2" to 8" Lengths
  • Ø6 mm Precision-Ground Stainless Steel
  • 4-40 Removable Setscrew at Both Ends

These 30 and 60 mm cage rods are made from stainless steel. 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. As part of our sustainability initiatives to reduce packaging waste, we offer our most popular sizes in packs of four. 

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
ER025 Support Documentation
ER025Customer Inspired!Cage Assembly Rod, 1/4" Long, Ø6 mm
$5.05
Today
ER05 Support Documentation
ER05Cage Assembly Rod, 1/2" Long, Ø6 mm
$5.05
Today
ER05-P4 Support Documentation
ER05-P4Cage Assembly Rod, 1/2" Long, Ø6 mm, 4 Pack
$19.19
Today
ER1 Support Documentation
ER1Cage Assembly Rod, 1" Long, Ø6 mm
$5.05
Today
ER1-P4 Support Documentation
ER1-P4Cage Assembly Rod, 1" Long, Ø6 mm, 4 Pack
$19.19
Today
ER1.5 Support Documentation
ER1.5Cage Assembly Rod, 1.5" Long, Ø6 mm
$5.85
Today
ER1.5-P4 Support Documentation
ER1.5-P4Cage Assembly Rod, 1.5" Long, Ø6 mm, 4 Pack
$22.22
Today
ER2 Support Documentation
ER2Cage Assembly Rod, 2" Long, Ø6 mm
$6.10
Today
ER2-P4 Support Documentation
ER2-P4Cage Assembly Rod, 2" Long, Ø6 mm, 4 Pack
$23.18
Today
ER3 Support Documentation
ER3Cage Assembly Rod, 3" Long, Ø6 mm
$6.60
Today
ER3-P4 Support Documentation
ER3-P4Cage Assembly Rod, 3" Long, Ø6 mm, 4 Pack
$25.08
Today
ER4 Support Documentation
ER4Cage Assembly Rod, 4" Long, Ø6 mm
$7.10
Today
ER4-P4 Support Documentation
ER4-P4Cage Assembly Rod, 4" Long, Ø6 mm, 4 Pack
$26.98
Today
ER6 Support Documentation
ER6Cage Assembly Rod, 6" Long, Ø6 mm
$8.65
Today
ER6-P4 Support Documentation
ER6-P4Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
$32.21
Today
ER8 Support Documentation
ER8Cage Assembly Rod, 8" Long, Ø6 mm
$11.70
Today
ER8-P4 Support Documentation
ER8-P4Cage Assembly Rod, 8" Long, Ø6 mm, 4 Pack
$44.46
Today
ER10 Support Documentation
ER10Cage Assembly Rod, 10" Long, Ø6 mm
$12.70
Today
ER12 Support Documentation
ER12Cage Assembly Rod, 12" Long, Ø6 mm
$16.80
Today
ER18 Support Documentation
ER18Cage Assembly Rod, 18" Long, Ø6 mm
$25.50
Today
ER24 Support Documentation
ER24Cage Assembly Rod, 24" Long, Ø6 mm
$29.75
Today

Graduated ER Rods for 30 mm and 60 mm Cage Systems


Click to Enlarge
View Imperial Product List
Item #QtyDescription
Imperial Product List
LCP01160 mm Cage Plate, SM2 Threads, 0.5" Thick, 8-32 Tap (Two SM2RR Retaining Rings Included)
LCP01T160 mm Cage Plate, SM2 Threads, 0.9" Thick, 8-32 Tap (Two SM2RR Retaining Rings Included)
ER6E4Engraved Cage Assembly Rod, 6" Long, Ø6 mm, Qty. 1
View Metric Product List
Item #QtyDescription
Metric Product List
LCP01/M160 mm Cage Plate, SM2 Threads, 0.5" Thick, M4 Tap (Two SM2RR Retaining Rings Included)
LCP01T/M160 mm Cage Plate, SM2 Threads, 0.9" Thick, M4 Tap (Two SM2RR Retaining Rings Included)
ER6E4Engraved Cage Assembly Rod, 6" Long, Ø6 mm, Qty. 1
Graduated ER Rods with LCP01 and LCP01T 60 mm Cage Plates
  • Engraved Scale (Increments of 1 mm) for Accurate Adjustments
  • For Use with Standard 30 mm and 60 mm Cage Systems
  • Available in Two Lengths: 4" and 6"
  • Ø6 mm Precision-Ground Stainless Steel
  • 4-40 Removable Setscrew at Both Ends

These graduated ER rods are identical to the 4" and 6" ER Rods above, but feature an engraved scale along the side. The rods have short tick marks every 1 mm, long tick marks every 5 mm, and a straight vertical line along the rod's entire length. The engraved rods simplify alignment issues, especially in complicated setups with multiple components and integrated cage systems. For custom lengths, please contact Technical Support.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
ER4E Support Documentation
ER4ECustomer Inspired!Engraved Cage Assembly Rod, 4" Long, Ø6 mm, Qty. 1
$15.90
Today
ER6E Support Documentation
ER6ECustomer Inspired!Engraved Cage Assembly Rod, 6" Long, Ø6 mm, Qty. 1
$15.90
Today

ER Rod Adapter for 30 mm and 60 mm Cage Systems

ERSCA 1D Construction
Click to Enlarge
View Imperial Product List
Item #QtyDescription
Imperial Product List
ERSCA-P41Rod Adapter for Ø6 mm ER Rods, 4 Pack
ST1XY-A1XY Translator with 100 TPI Drives
ER6-P42Cage Assembly Rod, 6" 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-A/M1XY Translator with 100 TPI Drives, Metric
ER6-P42Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
ST1XY-A translator with ERSCA adapters installed. This allows the translator to be mounted to other cage components with internal 4-40 threads.
  • Internally Accepts Ø6 mm ER Series Rods
  • 4-40 Threaded Stud and 4-40 Locking Setscrews with 0.05" (1.3 mm) Hex
  • Easily Add or Remove Components from Cage Assemblies
  • Also Available in Packs of Four

The ERSCA 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 Ø6 mm ER series rod with its setscrew removed. The 4-40 locking setscrew must be tightened to hold the ER rod in place. On the other side of the adapter, there is an externally 4-40 threaded stud with a 0.05" (1.3 mm) hex that can be threaded into the end of another ER series rod or 4-40 internally-threaded cage component.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
ERSCA Support Documentation
ERSCARod Adapter for Ø6 mm ER Rods
$11.10
Today
ERSCA-P4 Support Documentation
ERSCA-P4Rod Adapter for Ø6 mm ER Rods, 4 Pack
$42.14
Today

ER Cross Couplers for 30 mm and 60 mm Cage Systems


Click to Enlarge

C1A Couplers with ER Rods

Click to Enlarge

ER90B Bracket with Two ER Rods
  • Compatible with 30 mm and 60 mm Cage Systems
  • Couple ER Rods at 90°

These couplers can be used to join multiple 30 mm and 60 mm cage structures at 90°.

The C1A Cross Coupler clamps down onto the cage rods using the included 5/64" hex caphead screws.

The ER90B Bracket has one double-bored Ø6 mm hole and 4-40 taps on the top and bottom. An ER rod can be inserted into the hole and fixed in place using a 0.05" (1.3 mm) hex key or directly threaded into the taps.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
ER90B Support Documentation
ER90BFixed 90° Bracket, Ø6 mm Bore and 4-40 Taps
$14.00
Today
+1 Qty Docs Part Number - Universal Price Available / Ships
C1A Support Documentation
C1AER Rod Cross Coupler, Top and Bottom Pieces
$18.80
Today

Ø1/2" to Ø6 mm Right-Angle Post Clamp

RA90TR Clamp
Click to Enlarge
A Ø6 mm Cage Rod Mounted Perpendicularly to a Ø1/2" Post Using the RA90TR/M Clamp
  • Mounts a Ø6 mm Post or Cage Rod Perpendicular to a Ø1/2" Post
  • Thumbscrew Secures Right-Angle Clamp to Ø1/2" Post
  • Flexure Mechanism Secures Ø6 mm Post
  • Imperial and Metric Versions Available

The RA90TR(/M) Clamp allows a Ø6 mm cage rod or mini-series post to be mounted perpendicularly to a Ø1/2" post. The design combines a highly stable clamp flexure lock that is secured using an 5/64" (2 mm) balldriver with a thumbscrew locking mechanism for attaching the clamp to the Ø1/2" post. The center-to-center distance between the two posts is 1/2" (12.7 mm).

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
RA90TR Support Documentation
RA90TRCustomer Inspired!Right-Angle Ø1/2" to Ø6 mm Post Clamp, 3/16" Hex Thumbscrew
$15.30
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
RA90TR/M Support Documentation
RA90TR/MCustomer Inspired!Right-Angle Ø1/2" to Ø6 mm Post Clamp, 5 mm Hex Thumbscrew
$15.30
Today

Cage Plate Stops for ER Rods


Click to Enlarge

ERCPS Cage Plate Stops snap onto cage rods without any disassembly of the cage system.

Click to Enlarge

ERCPS Cage Rod Stops can mark the position of cage components.
  • Marks the Position of Cage Components
  • Flexure Clamping Mechanism
  • Sold in Packs of Four

ERCPS Cage Plate Stops mark the position of a cage plate, allowing it to be reliably moved and repositioned in a cage system. These clamps are 0.14" thick and are compatible with our Ø6 mm cage rods for 30 mm and 60 mm cage systems. Utilizing a flexure design, the clamps are secured in place using a 0.05" (1.3mm) hex key. They can be easily clamped onto the middle of a cage rod without removing other components.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
ERCPS Support Documentation
ERCPSCustomer Inspired!Cage Plate Stops for ER Rods (4 Pack)
$41.25
Today

ER Rod Swivel Coupler for 30 mm and 60 mm Cage Systems

  • Provides 180° of Total Swing
  • Lockable Design for Greater Rigidity
  • Ø6 mm Precision-Ground Stainless Steel

The C2A swivel coupler enables the connection of cage assemblies at arbitrary angles. They are constructed from stainless steel, adhere to close tolerances, and provide an extremely rigid structure.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
C2A Support Documentation
C2ASwivel Coupler, 4 Pack
$105.00
Today

ER Rod End Swivel Connector for 30 mm and 60 mm Cage Systems

  • 180° of Total Swing
  • Ideal for Near Normal Angles
  • Lockable Design for Greater Rigidity
  • Ø6 mm Precision-Ground Stainless Steel
  • 5/64" Hex Locking Screw

The C3A swivel connector allows 30 mm or 60 mm ER 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
C3A Support Documentation
C3ARod End Swivel Connector, 4 Pack
$57.25
Today

ER Right-Angle Rod and Spacers for 30 mm and 60 mm Cage Systems

  • Build Rigid 3D Structures
  • ER90C Provides Rigid "T" Connection for Cage Assembly
  • ER90A and ER90L Maintain Perfect Rod Separation for Cage Assemblies
  • Increases Structural Rigidity When Used with Inline Applications

Insert the ER90C right-angle rod between two ER rods to form a "T" connection point. To form a complete 90° cage assembly a ER90A or ER90L spacer rod should be used for 30 mm or 60 mm cage systems, respectively. The spacer rod is placed between two ER90C right-angle rods to maintain the proper center-to-center spacing of the cage system (see image at right). Alternatively, a 30 mm or 60 mm cage cube can be used to create the rigid right-angle connection.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
ER90C Support Documentation
ER90C90 Degree "T" Extension, Qty. 1
$11.90
Today
ER90A Support Documentation
ER90A1.131" Spacer for 30 mm Cage Assembly, Qty. 1
$7.05
Today
ER90L Support Documentation
ER90LCustomer Inspired!2.311" Spacer for 60 mm Cage Assembly, Qty. 1
$8.50
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