DA Ultra Thin Cam Indexer: Load Capacity vs Compact Applications 29/05/2026 FAQ / FAQ About Cam Indexers / FAQ About Rotary Motion 109 ViewsWhat sets the DA ultra thin cam indexer apart?Space is money on a modern production floor. Every millimeter of vertical clearance recovered above a rotary indexing table translates directly into fixture simplification, robot reach margin, or the ability to stack a second process tier above the first. In fact, when manufacturers select a DA Ultra Thin Cam Indexer for their operations, they gain unique advantages in space optimization. The DA ultra thin cam indexer — also referred to in the industry as a low-profile cam divider, flat-body indexing unit, or pancake-style intermittent drive — was purpose-built around that constraint.Where a conventional DF or DT cam indexer packages its conjugate cam and output bearing into a roughly cubic housing, the DA design flattens the entire drive envelope. With DA Ultra Thin Cam Indexer models, this is possible by repositioning the input shaft to a horizontal or parallel-offset configuration. In addition, it compresses the output flange assembly to a disc-like profile. The result is a unit that can be 40 to 60 percent shallower than an equivalent-torque standard indexer. Still, it retains the same fundamental cam-driven self-locking dwell mechanism that defines the product family.Maximum load capacity — the real numbers with DA Cam IndexerThis is the question engineers ask first, and the answer depends on frame size. The DA series spans a meaningful range. Entry-level units targeting tabletop automation and benchtop testers carry output torque ratings starting around 30 N·m. Meanwhile, mid-frame units suited to multi-fixture carousel tables reach 150 to 300 N·m. The largest configurations of DA Ultra Thin Cam Indexer from major OEMs — used in medical device final-assembly carousels and precision optical sub-assembly lines — are rated up to 800 N·m output torque. In addition, they have axial load capacities exceeding 5 kN on the output flange.Critically, “load capacity” for a cam indexer has three components that must all be within spec simultaneously. These are dynamic indexing torque (the peak load during the motion phase), static dwell torque (the holding load during the locked stop), and axial/radial moment on the output flange. The DA geometry, with its enlarged-diameter output bearing ring, actually improves moment stiffness relative to its low height. This is a counterintuitive advantage. Therefore, it makes DA Ultra Thin Cam Indexer products particularly well suited to cantilevered fixture loads common in compact multi-station cells.DA Ultra Thin Cam Indexer vs Standard Cam Indexer — a direct comparisonDA ultra-thin seriesStandard DF / DT indexerlower overall heightTaller cubic housing profileLarge-diameter output ring bearingCentral output shaft with separate bearingOffset or bottom-entry input shaftTop-entry or side-entry inputHigh moment stiffness for cantilevered loadsHigher top-end torque availabilityIdeal for space-critical inline cellsBetter for heavy-payload open-frame tablesFive structural features that define the DA designDisc-form housingRing output bearingRing output bearingOffset input geometry is one mark of DA Ultra Thin Cam Indexer engineering.Total height compressed to roughly 30–35% of flange diameter, enabling sub-frame installation in tight enclosures.Cross-roller or four-point contact ring integrated into the output flange — no separate turntable bearing needed above the unit.Identical to full-size indexers: zero-backlash lock during the stationary phase, no brake, no servo hold required.Input shaft exits from the side or bottom, freeing the central bore for pneumatic lines, cable pass-through, or optical access.Which compact devices and machines are the best fit?Medical device assemblySemiconductor handlingOptical & photonicsWatch & micro-componentsCollaborative robot cellsLab automation & testingSyringe barrel assembly, catheter tip bonding, and IVD cartridge loading cells — all demand class-10000 enclosure integration where vertical clearance is strictly limited.Wafer-level inspection carousels, IC tray indexers, and MEMS packaging cells where fab-floor footprint is metered by the square centimeter.Lens coating carousels, fiber-optic connector assembly tables, and multi-station laser marking cells with overhead beam-delivery constraints.High-station-count micro-assembly turntables for watch movement parts, miniature connectors, and precision fastener inspection.Cobot-adjacent fixture carousels where low table height keeps the part presentation zone within the cobot’s optimum reach envelope without a pedestal riser.Benchtop reagent-dispensing carousels, multi-position sample handlers, and automated functional test rotators integrated inside instrument cabinets.Selection rule of thumb: If your available under-fixture vertical space is less than 120 mm, or if your machine envelope requires the indexer to sit inside a sub-floor recess or below a conveyor deck, DA Ultra Thin Cam Indexer solutions are almost always the right starting point over a standard DF or DT unit of equivalent torque. Industrial Automation Case With DA Ultra Thin Cam IndexerMedical device: IVD diagnostic cartridge assembly cellSoutheast Asia · Class-10000 cleanroomA contract manufacturer building immunoassay test cartridges needed a 12-station rotary indexing table to fit entirely within a laminar-flow cabinet 280 mm tall from deck to canopy rail. Every standard DF indexer evaluated added 170–190 mm of housing height alone, leaving insufficient clearance for the fixture tooling plate above. The DA-12-150 unit (150 N·m rating, 68 mm overall housing height) resolved the conflict: the fixture plate, pneumatic gripper fingers, and vision camera mounted above the output flange with 94 mm of clear working space to spare. Cycle time runs at 4 seconds per station; 22 months into production, positioning repeatability holds at ±0.03 mm at the outermost fixture pin — within the original process validation window with no recalibration.Collaborative robot cell: PCB functional test handlerPenang, Malaysia · EMS facilityAn electronics manufacturing services provider built a 4-station PCB functional test cell around a Universal Robots UR5e cobot. The cobot’s optimal pick height — minimizing shoulder torque and wrist articulation — placed the ideal part-presentation surface at 850 mm from floor level on a standard worktable. Adding a conventional indexer would have pushed the fixture surface to 1,050 mm, requiring a modified low-table base and incurring a 6-week lead-time delay. The DA-4-50 unit (50 N·m, 48 mm body height) kept the fixture surface at 862 mm — effectively invisible to the cobot’s reach model. Throughput reached 720 boards per 8-hour shift within the first week of commissioning, versus the 580-board benchmark on the prior manual rotation fixture.If you want to learn more technical paratmer about DA cam indexer, please check this page https://www.tallman-robotics.com/cam-indexer-gears/, If you want to learn more of other types of Cam Indexers, please check this page https://www.tallman-robotics.com/cam-indexing-gearbox/. Youtube: https://www.youtube.com/@tallmanroboticsTiktok: https://www.tiktok.com/@tallmanroboticsLinkedin: https://www.linkedin.com/in/tallman-roboticsAuthor: Techman, Director from engineering department of TallMan Robotics Tags:cam indexer load capacitycleanroom indexing automationcobot rotary tablecompact cam indexerDA ultra-thin cam indexerDA vs DF cam indexerflat-body indexing unitintermittent drive compact machinelow-profile cam dividermedical device assembly carouseloptical assembly indexingpancake indexer drivering bearing output flangeself-locking dwell mechanismsemiconductor wafer indexerthin rotary indexing tableShare:FacebookTwitterLinkedInWhatsAppPinterestTumblrWeChat QR CodeScan the QR Code to share on WeChatWeChatE-MailPrintPrev: DT Cam Indexer: Structure, High-speed or low-speed?Next: A Complete Technical Guide to Linear Electric Cylinder Types: Structure, Precision, and Industrial Applications RelatedHydraulic vs Electric Cylinder: Selection & Retrofit GuideHow to Choose an Ultra-Long-Stroke Timing Belt Linear Module That Holds Its Accuracy Over Time？How to Select Ultra Long Stroke Ball Screw Linear Modules for Smooth, Stable OperationLinear Module Stroke and Installation Space Matching: A Practical Selection GuideWhat Points Should Be Noted When Selecting Short Stroke Linear Module?Can Different Brands of Servo Motors Be Directly Adapted to the Same Linear Module?What Additional Factors Should Be Considered When Selecting Servo Motors For Heavy Duty Linear Modules?What Are Servo Motor & Linear Module Installation Methods: Flange Type vs Shaft Coupling Type | Full Selection & Matching Guide
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