Hollow Rotary Tables,Cam Indexers,Planetary Gear Reducers 
PU Cam Indexing Tables utilize a globoidal cam mechanism with hardened steel roller followers mounted on a turret. The cam features a mathematical conjugate surface machined with 0.005 mm profile tolerance. Rotation converts continuous input motion into precise intermittent output via roller engagement.
Cam Indexing Tables, also named as Paradex Cam Indexers, which include 2 plate cams fixed to the input shaft and a spider which supports the cam follower to the output shaft. Paradex Cam Indexers have a plane cam mechanism so that the follower contacting the 2 plate cams on the input side serves to transmit rotation to the spider of the output shaft.
Paradex Cam Indexers are high-precision rotational positioning devices used in a variety of industrial applications. These indexers employ a cam-actuated mechanism to accurately and repeatably index a shaft or workpiece to predefined angular positions.
Technical Deep Dive into TechMan Automation PU Cam Indexing Tables
The table below delivers PU Cam Indexing Tables with photos and full specification coverage.
| PU Cam Indexing Tables/Paradex Cam Indexers |  |  |  |
Basic Parameters of PU Paradex Cam Indexer.
| Model | PU50DS, PU60DS, PU65DS, PU80DS, PU100DS, PU125DS, PU150DS, PU175DS, PU225DS, PU250DS, PU320DS |
| Station Numbers | 1、,2、3、4、5、6、8 |
| Installation Surface | Refer to drawing |
| Speed of Input Shaft (RPM） | 5~300（Up to actual loading）Pls inform in advance if high speed using |
Industrial applicaions with PU Cam Indexing Tables
Automotive Powertrain: Cylinder head multi-op transfer — 6-station heavy-duty rotary table
A PU cam indexing table drives a 6-station rotary transfer cell machining cast-iron cylinder heads through roughing, semi-finish boring, reaming, tapping, washing, and leak-test operations in a single setup. The output table diameter is 1,800 mm, mounting six tombstone pallets each carrying a 68 kg cylinder head at 680 mm from the table centre. Total output inertia reaches 188 kg·m². The PU polygon conjugate cam drives the table through 60° index steps at 60 input RPM with a 240°/120° dwell ratio, providing 2.0 seconds of rigid dwell per station. During the roughing operation at station 2, three simultaneous carbide face mills apply a combined cutting force of 8.4 kN at 640 mm table radius — generating a tilting moment of 5.4 kN·m on the output flange. The PU integrated axial-radial bearing at 1,100 mm pitch circle diameter absorbs this moment within the table column structure, holding output flange deflection below 0.008 mm at the furthest pallet point. Table repeatability of ±5 arc-seconds positions each cylinder head within ±0.006 mm of the boring spindle axis across all six stations, meeting the engine block bore alignment tolerance of ±0.010 mm specified under ISO 2768-f fine grade.
At 188 kg·m² output inertia and 5.4 kN·m sustained tilting moment, no DE, DS, DF, or DT indexer in standard catalogue form reaches this load class. The PU polygon cam geometry distributes contact force across multiple roller followers simultaneously — unlike a single-groove disc cam — reducing peak Hertzian contact stress per roller at heavy inertia loads and extending the cam surface fatigue life beyond 20,000 operating hours at this cycle rate. The column-mounted housing transfers cutting reaction forces directly into the machine base without loading the cam mechanism.
Heavy Equipment: Hydraulic valve body assembly — 8-station pallet transfer table
A PU cam indexing table steps an 8-station hydraulic valve body assembly cell through precision bore gauging, spool press-fit, O-ring installation, end-cap torquing, and hydrostatic leak test at 450 bar. Each station mounts a steel fixture pallet carrying a ductile-iron valve body weighing 52 kg at 540 mm table radius. Total output inertia is 114 kg·m². The PU table runs at 40 input RPM with a 270°/90° dwell ratio, holding each valve body stationary for 3.38 seconds — sufficient for the press-fit station to drive the control spool 62 mm into the bore at 28 kN force while the torque station simultaneously drives six M12 cap screws to 95 N·m. The press-fit vertical force transmits a 1.5 kN·m overturning moment to the pallet at 540 mm radius; the PU bearing column absorbs this without measurable flange tilt, keeping the spool bore axis within ±0.007 mm of the press-fit ram centreline. The 450 bar hydrostatic test at station 7 pressurises the assembled valve body through a rotary face seal on the PU centre column, routing test fluid axially without an external high-pressure rotary union above the table surface.
Two independent requirements converge on the PU unit. First, 114 kg·m² inertia at 40 RPM with simultaneous press-fit and torquing loads exceeds the DT family’s structural capacity — the DT crossed-roller bearing pitch circle tops out below the moment arm generated by a 52 kg pallet at 540 mm radius under 28 kN press force. Second, routing 450 bar test fluid through the centre column via a static face seal eliminates the external high-pressure rotary union — a component with a documented seal life of 800 hours at 450 bar that would require quarterly replacement and a machine shutdown on every service interval.
FAQs about intermittent gearbox
- What core structure makes PU cam indexing table stable?
Solid PU contact cam and precision output disc form main structure. Hardened parts cut running gap. It keeps steady rotary positioning in long term operation. - Can users adjust positioning angle of PU cam indexing table?
Users change internal cam specification to set fixed stop angle. It does not support random angle free adjustment on site. - Is PU cam indexing table fit continuous rotation work?
No. It only fits intermittent start-stop rotary work scene. Continuous rotation breaks its original transmission design logic. - How does a PU cam indexing table lock at each station?
The cam’s conjugate surface wedges roller followers into a preloaded V-groove. Mechanical locking requires no brake or clutch. - Why use globoidal cam instead of parallel cam?
Globoidal cam engages multiple rollers simultaneously. Load distributes across 3-5 rollers. Parallel design engages only one roller.
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