Description
The Straight Gearbox PF Series is a compact single-stage planetary reduction gearbox for CNC motion systems, automation equipment and machinery using stepper or servo motors. This product group covers PF60 and PF90 frame sizes with 3:1, 5:1, 7:1 and 10:1 ratios, including NEMA23 / 57 mm and NEMA34 / 86 mm stepper interfaces plus servo-compatible versions.
The PF design is intended for applications where a rigid, compact reducer is required between the motor and driven mechanism. The supplier catalogue specifies synthetic grease lubrication, IP65 protection, operation in any mounting direction and one-stage efficiency above 96% for the PF/PFR family.
Available PF Series Variants
Select the gearbox by motor type, flange size and reduction ratio. The table below lists the Vallder variants for this product.
| Model | Motor Type | Flange | Ratio | 3D Model | PDF Drawing | SKU |
| PF60-L1-57-3:1 – NEMA23 | Stepper | 57 / NEMA23 | 3:1 | 3D ZIP | 1254001 | |
| PF60-L1-57-5:1 – NEMA23 | Stepper | 57 / NEMA23 | 5:1 | 3D ZIP | 1254002 | |
| PF60-L1-57-7:1 – NEMA23 | Stepper | 57 / NEMA23 | 7:1 | 3D ZIP | 1254003 | |
| PF60-L1-57-10:1 – NEMA23 | Stepper | 57 / NEMA23 | 10:1 | 3D ZIP | 1254004 | |
| PF90-L1-86-3:1 – NEMA34 | Stepper | 86 / NEMA34 | 3:1 | 3D ZIP | 1254005 | |
| PF90-L1-86-5:1 – NEMA34 | Stepper | 86 / NEMA34 | 5:1 | 3D ZIP | 1254006 | |
| PF90-L1-86-7:1 – NEMA34 | Stepper | 86 / NEMA34 | 7:1 | 3D ZIP | 1254007 | |
| PF90-L1-86-10:1 – NEMA34 | Stepper | 86 / NEMA34 | 10:1 | 3D ZIP | 1254008 | |
| PF60-L1-3:1 – Servo | Servo | 60 | 3:1 | 3D ZIP | 1254073 | |
| PF60-L1-5:1 – Servo | Servo | 60 | 5:1 | 3D ZIP | 1254074 | |
| PF60-L1-7:1 – Servo | Servo | 60 | 7:1 | 3D ZIP | 1254075 | |
| PF60-L1-10:1 – Servo | Servo | 60 | 10:1 | 3D ZIP | 1254076 | |
| PF90-L1-3:1 – Servo | Servo | 90 | 3:1 | 3D ZIP | 1254077 | |
| PF90-L1-5:1 – Servo | Servo | 90 | 5:1 | 3D ZIP | 1254078 | |
| PF90-L1-7:1 – Servo | Servo | 90 | 7:1 | 3D ZIP | 1254079 | |
| PF90-L1-10:1 – Servo | Servo | 90 | 10:1 | 3D ZIP | 1254080 | |
| All product data (pictures, dimensions, tables, drawings) are provided as received from the supplier; we exclude liability for their accuracy or completeness. | ||||||
PF60 / PF90 Dimensions
The drawing and complete dimension table below cover the single-stage PF60 and PF90 gearbox frames used by the listed stepper and servo variants. All dimensions are in millimetres unless otherwise specified. The listed products use the L1 single-stage configuration, so the L4 values below correspond to Size 1.
| Dimension | PF60 | PF90 | ||
| Stepper 57 / NEMA23 | Servo 60 | Stepper 86 / NEMA34 | Servo 90 | |
| D1 | 70 | 70 | 100 | 100 |
| D2 | 5.5 | 5.5 | 6.5 | 6.5 |
| D3 j6 | 14 | 14 | 20 | 20 |
| D4 g6 | 50 | 50 | 80 | 80 |
| D5 | 17 | 17 | 25 | 25 |
| D6 | M5×0.8P | M5×0.8P | M6×1P | M6×1P |
| D7 | 60 | 60 | 90 | 90 |
| L1 | 30 | 30 | 36 | 36 |
| L2 | 35 | 35 | 40.5 | 40.5 |
| L3 | 3 | 3 | 3 | 3 |
| L4 (L1 / Size 1) | 56 | 56 | 77.5 | 77.5 |
| L5 | 20 | 20 | 25 | 25 |
| L6 | 3 | 3 | 3 | 3 |
| B1 h9 | 5 | 5 | 6 | 6 |
| H1 | 16 | 16 | 22.5 | 22.5 |
| C1* | 70 | 70 | 90 | 90 |
| C2* | M4×0.7P | M4×0.7P | M6×1P | M6×1P |
| C3* | ≤14 | ≤14 | ≤19 | ≤19 |
| C4* | 31 | 31 | 47 | 47 |
| C5* | 50 | 50 | 70 | 70 |
| C6* | 4 | 4 | 6 | 6 |
| C7* | 60 | 60 | 90 | 90 |
| C8* | 22 | 22 | 32 | 32 |
| All product data (pictures, dimensions, tables, drawings) are provided as received from the supplier; we exclude liability for their accuracy or completeness. | ||||
* C1–C8 are motor-side input dimensions. The manufacturer notes that these dimensions refer to the mounted motor type; verify the exact input adapter dimensions for the selected stepper or servo motor before installation.
PF60 / PF90 Technical Data
The table below reproduces the PF-series operating data relevant to the PF60 and PF90 frames used by the listed L1 / single-stage Vallder variants.
| Parameter | PF60 | PF90 |
| Maximum output torque | 1.5 × nominal output torque | 1.5 × nominal output torque |
| Nominal input speed | 4000 rpm | 3500 rpm |
| Maximum input speed | 8000 rpm | 6000 rpm |
| Backlash, PF, 1 stage | ≤14 arcmin | ≤10 arcmin |
| Torsional stiffness | 1.8 N·m/arcmin | 4.85 N·m/arcmin |
| Maximum radial force | 240 N | 450 N |
| Maximum axial force | 220 N | 430 N |
| Service life | 20,000 h | 20,000 h |
| Efficiency, 1 stage | ≥96% | ≥96% |
| Operating temperature | -10°C to +90°C | -10°C to +90°C |
| Degree of protection | IP65 | IP65 |
| Mounting position | Any direction | Any direction |
| Lubrication | Synthetic lubricating grease | Synthetic lubricating grease |
| Noise, PF | ≤58 dB(A) | ≤60 dB(A) |
| Weight, PF, 1 stage | 0.98 kg | 3.12 kg |
| All product data (pictures, dimensions, tables, drawings) are provided as received from the supplier; we exclude liability for their accuracy or completeness. | ||
Construction, Performance and Applications
The PF Series is a compact straight-tooth planetary reducer for CNC and automation systems using stepper or AC servo motors. The section below consolidates the practical construction and application points without repeating the technical values already listed in the PF60 / PF90 tables above.
Rigid Straight-Tooth Construction
The PF architecture combines a compact inline planetary stage with a rigid output structure for applications that require efficient mechanical reduction in limited installation space. DINSENSE lists the PF family as a straight-tooth planetary reducer and positions its transmission products around low backlash, high efficiency, high input speed, high output torque, smooth running and low noise.
- Compact planetary stage: Straight input-to-output geometry simplifies integration into CNC axes and automated mechanisms.
- Stepper and servo configurations: PF60 and PF90 are available with dedicated motor-side interfaces for both motor types.
- Protected operation: The supplier technical data for these frames specifies grease lubrication, IP65 protection and installation in any mounting direction.
- Single-stage reduction: The listed variants cover 3:1, 5:1, 7:1 and 10:1 ratios for practical speed and torque matching.
CNC and Automation Integration
The PF Series is intended for machine builders who need a compact planetary gearbox between the motor and driven mechanism. Separate Stepper and Servo mechanical interfaces make it possible to select the correct motor-side geometry while keeping the appropriate PF60 or PF90 gearbox frame for the machine design.
- CNC motion systems: Suitable for router, milling-machine and positioning axes requiring inline planetary reduction.
- Rotary mechanisms: Practical for rotary tables, indexing systems and other compact driven assemblies.
- Automation equipment: Applicable to packaging, handling, woodworking, printing and general automated machinery.
- Motor-specific CAD support: Dedicated Stepper and Servo 3D models and drawings are provided below for installation planning.
3D Models and Technical Drawings
Download the dedicated mechanical reference files for each PF60 and PF90 motor interface. Unlike the PL Series, the PF Series files below include separate Stepper and Servo CAD models and dimensional drawings, allowing the motor-side mounting pattern and input interface to be checked directly for the selected configuration.
PF60 Engineering Files
Stepper — 57 mm / NEMA23 interface
AC Servo — 60 mm interface
PF90 Engineering Files
Stepper — 86 mm / NEMA34 interface
AC Servo — 90 mm interface
Interface selection note: Stepper and AC Servo versions use dedicated motor-side geometries. Select and download the file set that matches the ordered motor type and PF frame. The Stepper drawings correspond to the NEMA interface used by the listed PF60 / NEMA23 and PF90 / NEMA34 variants, while the Servo drawings show the dedicated 60 mm and 90 mm servo interfaces.
PF Series Gearbox Video
Watch the video below for a visual overview of the PF Series planetary gearbox construction and application.
FAQ frequently asked questions
Which ratio should I choose?
Choose the ratio from the required output speed, torque and positioning requirements. Final sizing must also respect motor torque and gearbox load limits.
Can I use PF60 with a NEMA23 stepper motor?
Yes, the listed PF60 stepper variants use the 57 mm / NEMA23 interface specified in the product variant data.
Can I use PF90 with a NEMA34 stepper motor?
Yes, the listed PF90 stepper variants use the 86 mm / NEMA34 interface specified in the product variant data.
