Linear transmission & geared-drive systems

NUODUN
From reducer selection to the complete motion mechanism.

Nuodun's official introduction focuses on linear transmission: trapezoidal and ball-screw jacks, spiral-bevel lifting units and related geared drives. For lifting, turning or height adjustment, specify the mechanism and control boundary as well as the reducer. Its NDP001 catalogue shows why stage count and actual ratio matter even when nominal ratios look identical.

Compare the nominal-50 rows Prepare the mechanism brief →

Original NDP001 catalogue · 1,400 rpm input

Nominal ratio 50 appears in two different stage rows.

The catalogue's NDP001 table has separate columns for nominal ratio i_N, actual ratio i, output speed n₂, output torque M_n2, input power P₁ and thermal power P_t. Keep those values in the same row when comparing or requesting a unit.

001L2 · two-stage nominal 50

Actual ratio: 50.28
Published output speed: 28.0 rpm
Output torque: 75 Nm
P₁ / P_t: 0.20 kW / 1.5 kW

001L3 · three-stage nominal 50

Actual ratio: 45.77
Published output speed: 30.5 rpm
Output torque: 140 Nm
P₁ / P_t: 0.50 kW / 1.0 kW

Both rows are from the same NDP001 sheet, but they describe different gearing. A purchase request that says only “ratio 50” leaves output speed, stage count and capacity ambiguous. Use the stage/model code and actual ratio on the approved specification.

Stage code	Nominal i_N	Actual i	Output rpm	M_n2 · Nm	P₁ · kW	P_t · kW
001L1	3.55	3.577	391.0	125	5.00	3
001L1	5	4.941	283.0	110	3.00	3
001L2	20	20.7	67.0	135	1.00	1.5
001L2	50	50.28	28.0	75	0.20	1.5
001L3	50	45.77	30.5	140	0.50	1
001L3	120	120.63	11.6	125	0.16	1

Selected rows, not a combined envelope. Output speeds retain the catalogue's rounded values. Request the current selected-model drawing and operating-condition confirmation.

Read the full original NDP001 rating sheet

Original sheet embedded on the official product-detail page. The page title and embedded catalogue model differ; these figures are explicitly the NDP001 sheet.

Existing NDP001 directory specifications →

Two capacity checks

Mechanical torque and thermal power need their own operating conditions.

The table publishes P_t separately from P₁ and M_n2. Its stage-group thermal values should not be substituted for a selected row's mechanical torque.

Start with the real running cycle

Provide input/output speed, load torque, starts, reversals, dwell and operating hours. Identify acceleration and abnormal loads. Ask the supplier to confirm the mechanical rating and life for that selected stage/ratio.

Define the thermal assumptions

Specify ambient temperature, mounting orientation, ventilation, lubrication and continuous/intermittent operation. Ask which assumptions the catalogue P_t uses and whether correction or additional cooling applies to the machine.

Check external loads and geometry

Give radial/axial forces, direction and distance from the output support. The catalogue includes a separate radial-load column; obtain the permissible load for the actual shaft arrangement and duty before approving it.

Official RV worm-reducer photograph; an alternative drive architecture to NDP planetary reduction.

RV worm: configure the interfaces and holding requirement.

The official RV page lists 7.5–100 ratios, double-stage combinations reaching 10,000, 24.6–1,192 Nm output torque and 0.06–7.5 kW input power at 1,400 rpm. These are family envelopes, not one matched configuration.

Input options include IEC/NEMA motor interfaces or a solid shaft; output options include hollow shaft, inserted solid shaft and flange. Send the actual motor and driven-shaft drawings, selected mounting orientation and duty.

The supplier describes self-locking only under certain conditions. For a lifting or gravity-loaded mechanism, specify safe holding, stopping and power-loss behaviour separately and agree the brake/control and mechanical protection scope.

Existing RV directory specifications →

Specify what the complete linear mechanism must do.

Nuodun's introduction describes a progression from transmission components to control, drive and complete linear-motion solutions. A gearbox's torque rating is not the load rating of an assembled lift.

Movement

Travel and load geometry

Vertical/horizontal motion, load distribution, stroke, travel speed, guidance/support, unsupported lengths and available envelope. Identify compression/tension, buckling and side-load conditions for the actual screw/guide assembly.

Coordination

Single axis or linked lift

Number/location of lifting points, shaft/coupling or electrical synchronization, permitted skew, feedback and end-position detection. Send a complete arrangement drawing and how the load is supported through travel.

Operation

Cycle, safety and control

Run/dwell times, starts, emergency stops, loss of power and the required holding/protection functions. Agree motor/control/feedback supply, mechanical limits, guarding and machine-level verification responsibilities.

Acceptance

Test the assembled scope

Approved model/drawing, speed/travel/load conditions, synchronization tolerance, noise/temperature where relevant, lubrication and inspection records. Distinguish component tests from acceptance of the complete mechanism.

Company context and the selected order.

The official introduction traces Nuodun to 2011 and names trapezoidal and ball-screw jacks, spiral-bevel lifting units, cycloidal and planetary gear transmission. Its current footer identifies 诺顿（杭州）智能装备有限公司 and the Nanyang, Xiaoshan address.

Xiaoshan's October 2025 digital-upgrade project list names that entity for a reducer digital rapid-customization production-line project. This is historical project-list context, not proof of completion or certification of an NDP or RV model.

For qualification, identify the supplying entity, manufacturing site, selected component/assembly and drawing revision. Request the actual materials/process records, inspection results and operating documentation agreed for the order.

Send the mechanism drawing with the duty.

Give Nuodun a defined component or system supply scope.

Prepare sourcing request

Save NUODUN to include it in your request.

Application, quantities, supplying entity and component/system boundary.
NDP stage code/actual ratio or selected RV configuration.
Input motor, output torque/speed and load/time cycle.
Lift stroke/load distribution, guidance, linked-point geometry and support.
Interfaces, lubrication, environment, feedback and holding/protection scope.
Current drawing, capacity/life checks and agreed assembly acceptance records.

Sources & review

Reviewed 8 October 2026. NDP values come from the embedded NDP001 sheet; RV figures are supplier-published family ranges. Mechanism-selection questions are editorial guidance.

NUODUN · page carrying the NDP001 original sheets ↗Original NDP001 table at 1,400 rpm. Current page title differs from the catalogue; the model-specific table is identified explicitly.
NUODUN · RV worm-reducer page ↗Ratios, torque/input-power ranges, IEC/NEMA and shaft/flange interfaces, conditional self-locking description and product image.
NUODUN · company introduction ↗2011 history, linear-transmission products, system-design focus and current footer identity/address.
Xiaoshan · 2025 digital-upgrade project list ↗Entry 101: named Nuodun entity and reducer customization-line project; not completion or product certification.