FRMA/FRMB Multi-Channel Fiber Optic Rotary Joint

Product Introduction

The FRM series is a high-density channel product that can be configured with single-mode, multi-mode, or single-multi-mode hybrid fibers. Products with resistance to environmental factors such as shock, vibration, high and low temperatures are available. The product line includes two extended models, FRMA and FRMB.

FRMA features a tail fiber outlet and often used for 8 or more channels, with up to 60 channels available.

FRMB features a flange port, without tail fiber output, and can be configured with 2 to 4 channels.

Elements Required for Ordering
FRM①-②-③-④-⑤-⑥-⑦/⑧

①Model Type

②Fiber Type

③Operating

Wavelength

Tail Fiber

A (Output Type) B(Flange Port Type)

9/125(single-mode) 50/125(multi-mode) 62.5/125(multi-mode)

850

1310

1550

④Tail Fiber: length 1.2m, S (customer specified)

⑤Package: Φ0.9mm, Φ2mm, Φ3mm, K= armor-clad

⑥Connector Type: FC, ST, SC, LC, N= no connector

⑦End Face Type: PC (flat), APC (angled)

Example 1：FRMA6-9/125-1310-1.2m-Φ2.0K-FC/PC ； Example 2： FRMB4-9/125-1550-FC/PC

Main Technical Performance

Indicator Name	Value
Bandwidth	±50nm
Wavelength	1310/1550(SM);850/1310(MM)
Insertion Loss (Room Temperature)	≤3.5dB
Insertion Loss Fluctuation	≤1.5dB
Return Loss	≥40dB(SM)
Power Handling	≤23dBm
Tensile Strength	≤12N
Rotation Speed	0 ～ 300 rpm (higher speeds can be customized)
Estimated Lifetime	> 100 million rotations
Operating Temperature	-20 ～ 60℃ (-40 ～ 85℃ optional)
Storage Temperature	-50 ～ 85℃
Weight (excluding tail cable and connector)	1.6kg
Vibration and Impact Standard	GJB150 Land Mobile
Protection Class	IP54(IP65、IP67 optional)