Torsionally rigid coupling RBC … FKC-ALU
aluminumwith clampfor stepper motors

Torsionally rigid coupling - RBC … FKC-ALU - RINGSPANN - aluminum / with clamp / for stepper motors
Torsionally rigid coupling - RBC … FKC-ALU - RINGSPANN - aluminum / with clamp / for stepper motors
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Characteristics

Type
torsionally rigid
Construction
aluminum, with clamp
Product applications
for stepper motors, for electric motors
Performance
zero-backlash
Torque

Max.: 600,000,000 Nm
(442,537,289.566359 ft.lb)

Min.: 0 Nm
(0 ft.lb)

Description

Cross-slotted beam coupling with clamp made of high-strength aluminium 7075-T6 (material no. 3.4365). Designed for backlash-free, torsionally rigid connections; suitable for medium torques and drives with fast start/stop cycles.

Features
  • Backlash-free, torsionally rigid cross-slotted coupling
  • Designed for drives requiring fast start/stop cycles
  • Suitable for medium torque ranges
  • Material: Aluminium 7075-T6 (material no. 3.4365)


Typical application
  • Servomotors
  • Positioning systems
  • Step motors


Available variants (selection from webshop table; price not shown)
  • RBC 0015 FKC-ALU-003.000-003.000 — Article number: 4417-115108-003.00 — Weight: 9.0 g — d1: 3 mm — d2: 3 mm — Delivery time: 10 days
  • RBC 0015 FKC-ALU-005.000-003.000 — Article number: 4417-115108-M20532 — Weight: 9.0 g — d1: 5 mm — d2: 3 mm — Delivery time: 10 days
  • RBC 0015 FKC-ALU-005.000-005.000 — Article number: 4417-115108-005.00 — Weight: 9.0 g — d1: 5 mm — d2: 5 mm — Delivery time: 10 days
  • RBC 0020 FKC-ALU-004.000-004.000 — Article number: 4417-120108-004.00 — Weight: 20.0 g — d1: 4 mm — d2: 4 mm — Delivery time: 10 days
  • RBC 0020 FKC-ALU-006.000-004.000 — Article number: 4417-120108-M20542 — Weight: 20.0 g — d1: 6 mm — d2: 4 mm — Delivery time: 10 days
  • RBC 0020 FKC-ALU-006.000-006.000 — Article number: 4417-120108-006.00 — Weight: 20.0 g — d1: 6 mm — d2: 6 mm — Delivery time: 10 days
  • RBC 0025 FKC-ALU-006.000-006.000 — Article number: 4417-125108-006.00 — Weight: 33.0 g — d1: 6 mm — d2: 6 mm — Delivery time: 10 days
  • RBC 0025 FKC-ALU-008.000-006.000 — Article number: 4417-125108-M20559 — Weight: 33.0 g — d1: 8 mm — d2: 6 mm — Delivery time: 10 days
  • RBC 0025 FKC-ALU-008.000-008.000 — Article number: 4417-125108-008.00 — Weight: 33.0 g — d1: 8 mm — d2: 8 mm — Delivery time: 10 days
  • RBC 0025 FKC-ALU-010.000-006.000 — Article number: 4417-125108-M20579 — Weight: 33.0 g — d1: 10 mm — d2: 6 mm — Delivery time: 10 days
  • RBC 0025 FKC-ALU-010.000-008.000 — Article number: 4417-125108-M20583 — Weight: 33.0 g — d1: 10 mm — d2: 8 mm — Delivery time: 10 days
  • RBC 0025 FKC-ALU-010.000-010.000 — Article number: 4417-125108-010.00 — Weight: 33.0 g — d1: 10 mm — d2: 10 mm — Delivery time: 10 days
  • RBC 0030 FKC-ALU-010.000-010.000 — Article number: 4417-130108-010.00 — Weight: 60.0 g — d1: 10 mm — d2: 10 mm — Delivery time: 10 days
  • RBC 0030 FKC-ALU-012.000-010.000 — Article number: 4417-130108-M20598 — Weight: 60.0 g — d1: 12 mm — d2: 10 mm — Delivery time: 10 days
  • RBC 0030 FKC-ALU-012.000-012.000 — Article number: 4417-130108-012.00 — Weight: 60.0 g — d1: 12 mm — d2: 12 mm — Delivery time: 10 days


Technical characteristics / specifications
  • Series: RBC (FKC-ALU variant)
  • Construction: Cross-slotted beam coupling with clamp hub
  • Material: Aluminium 7075-T6 (material no. 3.4365)
  • Behavior: Backlash-free, torsionally rigid; suited to fast start/stop cycles
  • Intended for: Medium torque applications (servomotors, positioning and stepper systems)
  • Typical lead time (standard): 10 business days (ex works; standard for orders up to 5 pcs)

Catalogs

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Exhibitions

Meet this supplier at the following exhibition(s):

EXPOSIBRAM
EXPOSIBRAM

24-27 Aug 2026 Belo Horizonte (Brazil)

  • More information
    Electra Mining Africa
    Electra Mining Africa

    7-11 Sep 2026 Johannesburg (South Africa)

  • More information
    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.