Features
- Imperial and Metric Kits
- Frame Dimensions
- Imperial (L x W x H): 17" x 11" x 11" (432 mm x 279 mm x 279 mm)
- Metric (L x W x H): 17.13" x 11.11" x 11.08" (435.0 mm x 282.3 mm x 281.3 mm)
- Drawer Dimensions
- Imperial (L x W x H): 10.56" x 4.00" x 2.13" (268 mm x 102 mm x 54 mm)
- Metric (L x W x H): 10.90" x 4.14" x 2.27" (276.9 mm x 105.3mm x 57.5 mm)
- Fully Stocked and Labeled Drawers
- Clear Labels with Product Icons Facilitate the Process of Locating the Desired Part
- Greater than 10% Savings Over Individual Items
This Cage Assemblies and Lens Tubes Essentials Kit contains 118 of our most popular cage assembly components, all conveniently housed in a completely labeled cabinet. Every drawer is clearly labeled with product icons in order to locate desired parts quickly. The cage system incorporates our SM1 Series of lens tubes and accessories. Refer to the Contents tab above for detailed information about the components included in the imperial and metric versions of this kit.
Application Idea: Use the RK4101 rack shelf to organize our ESK Series Essential Kits within our RK3884 standard 19" rack. Post-mounted optical elements can be stored in the 19" rack with the use of the RK4102 rack shelf as shown in the photo to the right.
All ESK Series Essential Kits are equipped with easy-to-read labels complete with product icons, allowing quick access to all products housed within the kits. All ESK Series Cabinets have slots in the rear of the case, shown to the left, for wall mounting and feature indentations on the top and four feet on the bottom for stable stacking.
Item # in ESK07A (Imperial) |
Item # in ESK07A/M (Metric) |
Description |
Image |
Quantity |
ER1 |
Cage Assembly Rod, 1" Long, Ø6 mm |
 Click to Enlarge |
4 |
ER1.5 |
Cage Assembly Rod, 1.5" Long, Ø6 mm |
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4 |
ER2 |
Cage Assembly Rod, 2" Long, Ø6 mm |
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4 |
ER3 |
Cage Assembly Rod, 3" Long, Ø6 mm |
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4 |
ER4 |
Cage Assembly Rod, 4" Long, Ø6 mm |
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4 |
ER6 |
Cage Assembly Rod, 6" Long, Ø6 mm |
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4 |
ER8 |
Cage Assembly Rod, 8" Long, Ø6 mm |
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4 |
CPA1 |
30 mm Cage System Alignment Plate with Ø0.9 mm Hole |
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4 |
CP02 |
CP02/M |
0.35" Thick Cage Plate, 30 mm, SM1 (1.035"-40) Threaded Aperture, 8-32 (M4) Tapped Hole, One SM1RR Retaining Ring Included with Each |
 Click to Enlarge |
5 |
CP02T |
CP02T/Ma |
0.5" Thick Cage Plate, 30 mm, SM1 (1.035"-40) Threaded Aperture, 8-32 (M4) Tapped Hole, Two SM1RR Retaining Rings Included with Each |
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3 |
SPT1 |
SPT1/M |
XY Slip Plate Positioner, 1 mm Coarse Adjustment |
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1 |
KC1-T |
KC1-T/M |
SM1 (1.035"-40) Threaded Kinematic Mount for Ø1" Optics |
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1 |
B1C |
B1C/M |
Blank Cover Plate with Rubber O-Ring for C4W/C6W |
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1 |
B2C |
SM1 (1.035"-40) Threaded Cube Plate for C4W/C6W |
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1 |
B3C |
B3C/M |
Rotatable Cage Cube Platform for C4W/C6W |
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1 |
B4C |
B4C/M |
Rotatable Kinematic Cage Cube Platform for C4W/C6W |
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1 |
B5CT2 |
Ø1" Cage Cube Optic Mount For B3C |
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1 |
C4W |
30 mm Cage System Cube, 4-Way |
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1 |
SM1L05 |
SM1 Lens Tube, 0.50" (12.7 mm) Bore Depth, One SM1RR Retaining Ring Included with Each |
 Click to Enlarge |
5 |
SM1L10 |
SM1 Lens Tube, 1.00" (25.4 mm) Bore Depth, One SM1RR Retaining Ring Included with Each |
 Click to Enlarge |
5 |
SM1L20 |
SM1 Lens Tube, 2.00" (50.8 mm) Bore Depth, One SM1RR Retaining Ring Included with Each |
 Click to Enlarge |
5 |
SM05L05 |
SM05 Lens Tube, 1/2" (12.7 mm) Bore Depth, One SM05RR Retaining Ring Included with Each |
 Click to Enlarge |
3 |
SM1T1 |
SM1 (1.035"-40) Coupler, Internal Threads |
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3 |
SM1T2 |
SM1 (1.035"-40) Coupler, External Threads, Two SM1NT Locking Nuts Included with Each |
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3 |
SM1A1 |
Thread Adapter, SM05 External / SM1 Internal Threaded Ends |
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5 |
SM1A2 |
Thread Adapter, SM1 External / SM2 Internal Threaded Ends |
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5 |
SM1A3 |
Thread Adapter, SM1 External / RMS Internal Threaded Ends |
 Click to Enlarge |
2 |
SM1A4 |
Thread Adapter, RMS External / SM1 Internal Threaded Ends |
 Click to Enlarge |
2 |
SM1V05 |
Ø1" Rotating Adjustable Focusing Element, 1/2" Travel |
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2 |
SM1V10 |
Ø1" Rotating Adjustable Focusing Element, 1" Travel |
 Click to Enlarge |
2 |
SM1RR |
Retaining Ring, SM1 (1.035"-40) Threaded x 0.08" (2 mm) Thick |
 Click to Enlarge |
10 |
SM1NT |
SM1 Locking Nut (1.035"-40) |
 Click to Enlarge |
5 |
SM1RC |
SM1RC/M |
SM1 Series Slip Ring |
 Click to Enlarge |
5 |
SM1D12 |
Iris Diaphragm Used In SM1 (1.035"-40) Series |
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5 |
SPW602 |
SM1RR Spanner Wrench with Clear Aperture |
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1 |
SPW603 |
SM05RR Spanner Wrench with Clear Aperture |
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1 |
SPW801 |
Adjustable Spanner Wrench Set |
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1 |
S19416 |
- |
16 Drawer Stackable Cabinet |
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1 |
- |
ST16 |
16 Drawer Stackable Cabinet |
 Click to Enlarge |
1 |

Item # |
% Weight Reduction |
CO2-Equivalent Reductiona |
ESK07A |
83.10% |
72.81 kg |
Smart Pack
- Reduce Weight of Packaging Materials
- Increase Usage of Recyclable Packing Materials
- Improve Packing Integrity
- Decrease Shipping Costs
Thorlabs' Smart Pack Initiative is aimed at waste minimization while still maintaining adequate protection for our products. By eliminating any unnecessary packaging, implementing packaging design changes, and utilizing eco-friendly packaging materials for our customers when possible, this initiative seeks to improve the environmental impact of our product packaging. Products listed above are now shipped in re-engineered packaging that minimizes the weight and the use of non-recyclable materials.b As we move through our product line, we will indicate re-engineered packages with our Smart Pack logo.