OOM-LR Series Miniature Dovetail Rails

Product Description

• The smallest optical rail in the Oeabt series with a compact structure
• Compatible with OOP-R series rail carriages
• Laser scale for component positioning
• Multiple M6 counterbores for mounting at the ends
• Available in multiple lengths from 75mm to 600mm

The miniature dovetail optical rail is designed for constructing one-dimensional accessories. Machined from solid aluminum, it features a dovetail mounting surface for installing snap-in rail carriages.

Dovetail Rails

 

Model	Specification	Counterbore Type	Weight	Material
OOM-LR75	75199.5mm	3 x M6 counterbores	24.8g	Aluminum Alloy
OOM-LR150LRA30-A2	150199.5mm	3 x M6 counterbores, 2 x Ø6.6*12.5mm holes	45.7g	Aluminum Alloy
OOM-LR300	300199.5mm	7 x M6 counterbores, 2 x Ø6.6*37.5mm holes	87.5g	Aluminum Alloy
OOM-LR450	450199.5mm	13 x M6 counterbores, 2 x Ø6.6*37.5mm holes	137.2g	Aluminum Alloy
OOM-LR600	600199.5mm	13 x M6 counterbores, 2 x Ø6.637.5mm holes, 2 x Ø6.650mm holes	170.0g	Aluminum Alloy

Rail Carriages

 

Model		Specification	Counterbore Type	Weight	Material
OOP-R15		39.61517.8mm	1 x M6 counterbore	21.3g	Aluminum Alloy
OOP-R25		39.62517.8mm	1 x M6 counterbore	30.6g	Aluminum Alloy
OOP-R50		39.65017.8mm	1 x M6 counterbore, 2 x M4 holes	53.5g	Aluminum Alloy

Vertical Adapter Carriage

 

Model	OOP-RV25
Specification	39.62521.8mm
Dovetail Surface	24.6*18mm
Weight	38.8g
Material	7075 Aluminum Alloy

Positioning/Return Carriages

 

Model	OOP-RP	OOP-RN
Specification	31.638.317.8mm	31.632.517.8mm
Adjustment Screw/Plunger	M5*0.25, L=36.6mm	Spring Plunger
Weight	36.4g	31.3g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy

16mm Dovetail Cage Plate Mounts

 

Model	LRA16-A	LRA16-B
Specification	40.648.08.9mm	40.631.88.9mm
Central Aperture	SM05 (0.535”-40) Internal Thread	None
Optical Axis Height	30mm	30mm
Through-hole Spacing	4 x Ø4.02mm, 16mm pitch	2 x Ø4.02mm, 16mm pitch
Weight	30.1g	20.0g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy

30mm Dovetail Cage Plate Mounts

 

Model	LRA30-A	LRA30-A2	LRA30-B	LRA30-B2
Specification	40.655.88.9mm	40.675.88.9mm	40.623.28.9mm	40.643.18.9mm
Central Aperture	SM1 (1.035”-40) Internal Thread	SM1 (1.035”-40) Internal Thread	None	None
Optical Axis Height	30mm	50mm	30mm	50mm
Through-hole Spacing	4 x Ø6.02mm, 30mm pitch	4 x Ø6.02mm, 30mm pitch	2 x Ø6.02mm, 30mm pitch	2 x Ø6.02mm, 30mm pitch
Weight	35.9g	55.3g	15.5g	34.9g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy	7075 Aluminum Alloy	7075 Aluminum Alloy

60mm Dovetail Cage Plate Mounts

 

Model	LRA60-A	LRA60-B
Specification	71.191.08.9mm	70.628.18.9mm
Central Aperture	SM2 (2.035”-40) Internal Thread	None
Optical Axis Height	50mm	50mm
Through-hole Spacing	4 x Ø6.02mm, 60mm pitch	2 x Ø6.02mm, 60mm pitch
Weight	85.8g	30.0g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy

Technical Description

(1) The miniature dovetail optical rail is engineered for building one-dimensional accessories. Machined from solid aluminum, it has a dovetail mounting surface where snap-in rail carriages can be installed. Components can sli

de along the dovetail mounting surface and be fixed at any position on it.

The rails are available in lengths ranging from 75mm to 600mm, and laser-engraved with a scale featuring numerical markings every 10mm and 1mm graduations. The rails can be fastened to optical tables or breadboards via counterbore slots and feature a compact structure.

 

(2) The OOP-R series rail carriages are designed to mount components onto OOM-LR series dovetail rails. The carriages can be snapped into place anywhere along the length of the rail without the need for installation from the rail ends. A single M6 counterbore is machined on the surface for mounting opto-mechanical components. Precision machining ensures excellent lateral alignment during translation along the rail length, and a side thumb screw locks the position in place.

(3) The OOP-RV25 vertical carriage features a 24.6mm-long dovetail surface, which allows vertical mounting of OOP-R series carriages clamped on the rail, enabling lateral translation perpendicular to the rail direction.

(4) The OOP-RP positioning carriage and OOP-RN return carriage assist in the fine adjustment movement of optical components mounted on dovetail rail carriages. When used in combination, they provide precise alignment from two directions along the rail axis. The OOP-RP positioning carriage includes an adjustment screw with a 26mm stroke, while the OOP-RN return carriage has a built-in spring plunger that delivers stability during actuation and enables finer, smoother movement compared to manual rough adjustment.

For use, place the movable carriage between the positioning carriage and the return carriage, then tighten the thumb screws to fix the positions of the two locators (the movable carriage should remain loose). Use a 2mm wrench to drive the adjustment screw, pushing the movable carriage toward the return carriage to reach the desired displacement position.

(5) The dovetail cage plate mount series is used to mount 16mm, 30mm or 60mm cage systems onto dovetail rails, aligning the center of the mounted cage system to an optical axis height of 30mm or 50mm (measured from the top surface of the rail). The dovetail clamp design allows for easy removal or addition of cage system components according to application requirements.

Optical Axis Height Compatibility

 

Optical Axis Height	30mm	50mm
16mm Cage System	LRA16-A	None
	LRA16-B	None
30mm Cage System	LRA30-A	LRA30-A2
	LRA30-B	LRA30-B2
60mm Cage System	None	LRA60-A
	None	LRA60-B

Assembly

Application Examples

 

Engineering Drawings

OPP-RV25 Engineering Drawing

OPP-RP Engineering Drawing

OPP-R50 Engineering Drawing

OPP-R25 Engineering Drawing

OPP-R15 Engineering Drawing

OOP-RN Engineering Drawing

OOM-LR600 Engineering Drawing

OOM-LR450 Engineering Drawing

OOM-LR300 Engineering Drawing

LPA60-B2 Engineering Drawing

LPA60-B Engineering Drawing

LPA60-A Engineering Drawing

LPA30-B Engineering Drawing

LPA30-A2 Engineering Drawing

LPA30-A Engineering Drawing

LPA16-B Engineering Drawing

LPA16-A Engineering Drawing