Industrial planetary drives

DONLY DLP: specify the load path, not just the reduction ratio

DONLY's DLP planetary range is presented for mixers, roller presses, crushers, hoists and other industrial drives. Its shaft and installation choices make the mechanical interface central to the selection. This profile explains what the official technical table establishes and what belongs in a frame-specific quotation.

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What DONLY publishes for DLP

The DLP product table describes a range of assemblies. The numbers below keep its original scope rather than turning the largest values into a single configuration.

Published item	Manufacturer entry	Meaning for selection
Size designation	3–29	Choose the complete size and construction code.
Reduction ratio	25–4,000	A range across multiple arrangements; use a matching frame table.
Permitted torque	Maximum up to 2,600 kN·m	A series maximum, not the continuous rating of every ratio.
Input speed	0–1,800 rpm	Supply the actual motor speed and operating cycle.
Mounting and output	Horizontal / vertical; hollow, solid or spline	Fix the mounting orientation and output connection in the drawing.

The page also names HT250 for the housing, 20CrMnTi for gears and L-CKC320 lubricant. These are published specifications. Require the applicable material and lubrication documents for the selected unit.

A mixer and a hoist ask different questions of the same range

Mixing and process machinery

If the output shaft also carries an impeller or other external load, describe radial force, axial thrust and bending moment at their actual application points. Ask whether the machine provides separate shaft support. A torque-only selection does not check these bearing loads.

Roller press or crusher

Send the load spectrum, overload events and the connection to the driven shaft. Agree the permissible peak duration and the protective system. A stall, repeated shock and ordinary continuous load need separate limits in the selection response.

Hoisting drive

Define the drum geometry, load, operating speeds and stopping duty. Identify the brake, load-holding method and required protective devices. The DLP series description does not by itself approve a complete lifting installation.

Make the interface and cooling package part of the supplied assembly

DONLY describes modular major components, alternative sealing arrangements and cooling provisions on its DLP page. For procurement, convert those choices into a bill of supply: identify the shaft variant, mounting orientation, seals, cooling arrangement and oil system in the quotation. An accessory shown in a catalog illustration may not be included in a gearbox-only price.

A solid shaft, hollow shaft and spline have different attachment details. Ask for the tolerances, engagement length, coupling or locking component and the installation procedure. For a vertical arrangement, request the corresponding lubrication plan rather than using the drawing or oil quantity from a horizontal version.

The useful comparison between two quotations is the same output speed and load cycle, the same shaft interface and the same cooling scope. Then compare dimensional fit, rated load and service access. Ask the supplier to return its selection calculation and outline drawing together, with a revision identifier you can reference on the purchase order.

Open the documented DLP range

The product record retains the original range image and source table. Use it to start a configuration discussion.

DLP Industrial Planetary ReducersSpecifications

Send the operating cycle and shaft drawing

Give DONLY enough detail to calculate the assembly rather than select from the series headline.

Prepare sourcing request

Save this manufacturer first to include it in your sourcing request.

Machine type, output speed and operating hours
Continuous load, shock/peak load, duration and overload protection
Radial/axial loads, bending moment and separate shaft supports
Solid, hollow or spline output; horizontal or vertical installation
Motor interface, ambient temperature, cooling, oil system and documents to supply

Sources & review

The technical data is from DONLY's product page. The exchange-hosted annual report is an issuer disclosure used to distinguish the company and subsidiaries, not an independent test of gearbox ratings.

Reviewed 8 October 2026.

DONLY DLP planetary product page ↗Applications, range table, materials, lubrication and output arrangements.
Ningbo DONLY 2025 annual report, SZSE ↗Issuer identity and group entities; filed 29 April 2026.