High-torque harmonic joints

Crabnova (Juxiedrive)

Vertical-integration harmonic joint modules. Large gear ratios (101:1, 161:1) deliver high torque density in compact housings, with force-control variants, brake + torque-sensor bundles and industrial-grade RMV3 series.

At a glance

Key series & specs

RB Lite 101:1 — 5–33 N·m rated, 0.26–0.74 kg, Φ48–Φ68
RB FBN waist series — 147–300 N·m rated at 161:1, Φ102–Φ120
RBV3 — same frames plus a power-off brake and torque sensor (≤0.5% FS)
RMV3 industrial line — Φ52–Φ170, 3.5–382 N·m rated, peak to 841 N·m

Specs quoted from manufacturer datasheets; final figures confirmed at quotation.

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Selection tables

Crabnova (Juxiedrive) — RB Lite series

Lightweight harmonic joints, 101:1, 0.26–0.74 kg. 48 V DC · CANopen / CAN-FD / EtherCAT · dual 23-bit magnetic encoder · ≤30 arcsec. Source: 巨蟹智能产品册 V3.0.1, p. 5.

ModelRatioRated (N·m)Peak (N·m)WeightSize (OD × L)Through-boreTypical axis
CE-RB-R48-101-Lite101:15110.26 kgΦ48 × 45.5Φ8Neck, wrist
CE-RB-R58-101-Lite101:120450.46 kgΦ58 × 58.0Φ8Wrist, elbow
CE-RB-R68-101-Lite101:133820.74 kgΦ68 × 73.3Φ18Shoulder, elbow

Crabnova (Juxiedrive) — RB DNN base series

Base harmonic joints, 101:1, 0.27–1.26 kg. 48 V DC · CANopen / CAN-FD / EtherCAT · dual 23-bit magnetic encoder · ≤30 arcsec. Source: 巨蟹智能产品册 V3.0.1, p. 6.

ModelRatioRated (N·m)Peak (N·m)WeightSize (OD × L)Through-boreTypical axis
CE-RB-R48-101-DNN101:16.5160.27 kgΦ48 × 53.6Φ8Neck, wrist
CE-RB-R58-101-DNN101:120450.55 kgΦ58 × 65.2Φ8Wrist, elbow
CE-RB-R68-101-DNN101:133820.83 kgΦ68 × 77.6Φ12Shoulder, elbow
CE-RB-R83-101-DNN101:1531201.26 kgΦ83 × 78.8Φ12Shoulder, elbow

Crabnova (Juxiedrive) — RB FBN waist series

Waist-dedicated harmonic joints, up to 300 N·m rated. 48 V DC · CANopen / CAN-FD / EtherCAT · ≤30 arcsec. Source: 巨蟹智能产品册 V3.0.1, p. 6.

ModelRatioRated (N·m)Peak (N·m)WeightSize (OD × L)Through-boreTypical axis
CE-RB-R83-101-FBN101:1531201.40 kgΦ83 × 74.0Φ12Waist
CE-RB-R102-161-FBN161:11473502.20 kgΦ102 × 90.3Φ20Waist
CE-RB-R120-161-FBN161:11804504.10 kgΦ120 × 110.3Φ23Waist
CE-RB-R120-MAX-161-FBN161:13006004.60 kgΦ120 × 125.0Φ23Waist

Crabnova (Juxiedrive) — RBV3 performance series

Same frames with a holding brake and torque sensor built in. Adds a power-off holding brake and torque sensor (≤0.5% FS, 0.1% FS resolution) in the same envelope. Torque figures per our datasheet — the RBV3 table in catalogue V3.0.1 is not machine-readable, so these are confirmed with the factory at quotation.

ModelRatioRated (N·m)Peak (N·m)WeightSize (OD × L)Through-boreTypical axis
CE-RBV3-R68-101101:133821.15 kgΦ68 × 82.6—Shoulder, elbow
CE-RBV3-R83-101101:1531201.60 kgΦ83 × 79.3—Shoulder, waist
CE-RBV3-R102-161161:11473502.60 kgΦ102 × 89.6—Waist, knee
CE-RBV3-R120-161161:11804504.10 kgΦ120 × 116.3—Waist, knee

Crabnova (Juxiedrive) — RMV3 industrial series

Seven frames, Φ52–Φ170, two ratios each. 48 V DC · CANopen / CAN-FD / EtherCAT · dual 23-bit magnetic encoder · ≤30 arcsec · holding brake · >10,000 h life. Source: 巨蟹智能产品册 V3.0.1, p. 12.

ModelRatioRated (N·m)Peak (N·m)WeightSize (OD × L)Through-bore
CE-RMV3-R5251:13.58.30.45 kgΦ52 × 57Φ11
CE-RMV3-R52101:15.0110.45 kgΦ52 × 57Φ11
CE-RMV3-R7051:17230.80 kgΦ70 × 58.5Φ18
CE-RMV3-R70101:110360.80 kgΦ70 × 58.5Φ18
CE-RMV3-R8051:121441.18 kgΦ80 × 63.9Φ18
CE-RMV3-R80101:131701.18 kgΦ80 × 63.9Φ18
CE-RMV3-R9051:133731.62 kgΦ90 × 69.5Φ18
CE-RMV3-R90101:1521071.62 kgΦ90 × 69.5Φ18
CE-RMV3-R11051:1511272.46 kgΦ110 × 78Φ28
CE-RMV3-R110101:1872042.46 kgΦ110 × 78Φ28
CE-RMV3-R142101:11784334.80 kgΦ142 × 96.5Φ36
CE-RMV3-R142161:11784844.80 kgΦ142 × 96.5Φ36
CE-RMV3-R170101:13457388.00 kgΦ170 × 110Φ40
CE-RMV3-R170161:13828418.00 kgΦ170 × 110Φ40

Specs quoted from manufacturer datasheets; final figures confirmed at quotation.

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FAQ

Which Crabnova series suits a waist axis?

The FBN waist-dedicated series: R83-FBN at 101:1 through to the R120-MAX-FBN at 161:1 and 300 N.m rated.

What does RBV3 add over the standard RB?

A power-off holding brake and a torque sensor (0.5% FS, 0.1% FS resolution) in the same envelope — the usual pick for vertical axes that must not drop when power is lost.

Is RMV3 a different product line?

Yes — the industrial series, 52 to 170 mm frames, 3.5 to 382 N.m rated, with a holding brake as standard and a 10,000 hour life figure.