Conveyor take-up units · Screw take-up frames and take-up bearing units, travel against conveyor length, frame style and size, shaft diameter, housing and bearing, tension adjustment and alignment
A take-up unit holds a conveyor pulley in an adjustable slide so the belt can be tensioned at installation and re-tensioned as it stretches in service. Settle three things before ordering one: the travel the conveyor length and belt need, the frame style and size for the pulley load and mounting, and the shaft diameter, bearing housing and adjustment method.
Screw take-up frames and take-up bearing units (UCT/UCTM type) used to tension belt conveyors and to adjust tail or bend pulleys and conveyor shafts. Gravity, hydraulic and winch take-ups for long overland conveyors, vehicle engine belt tensioners, crawler track tensioners and complete belt conveyors are outside this page; belt conveyors and pillow block housings have their own pages.
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01
Martin states that take-up frames take up the stretch in the conveyor belt and keep proper tension at the drive pulley to reduce slippage, and that correct belt tension prevents belt slippage and reduces belt sag, which affect belt and component life. [2] [3]
Martin's take-up frame nomenclature card sizes travel distance at 2–3% of conveyor length and lists six frame styles: MTA top-angle (frame sizes 10–60, 12–48 in travel), MLD light/medium (6–48 in), MHD heavy-duty (sizes 200–500, 12–48 in), MCP centre-pull (sizes 308–810, 12–36 in), MWS wide-slot (sizes 300–608, 6–30 in) and MTTU tube frames (6–48 in), each matched to bearings by shaft size range. [1]
Editorial calculation: for a conveyor 30 m (about 1,181 in) long, 2–3% gives about 24–35 in of travel, so a frame with 36 in travel covers it; a 60 m conveyor needs about 47–71 in, beyond the 48 in maximum on Martin's card, so ask the supplier how longer conveyors are tensioned. [1]
Give the supplier the conveyor length and type, belt width and belt type, pulley diameter and shaft size, required travel, belt tension or pulley load, frame style and mounting (top-angle, centre-pull, wide-slot, tube), bearing type and housing, environment (dust, moisture, washdown), material and quantity.
02
DEBOT lists Y-bearing take-up units such as the UCT208 for shafts from 20 to 55 mm, with grey cast iron housings, pre-lubricated, sealed and self-aligning bearings and an adjustable take-up design for tensioning conveyors; its dimension table steps the housing by shaft size (for example A = 34.0 mm for 20–25 mm shafts and 64.0 mm for 55 mm). [4]
Its take-up with frame bearing units (for example UCTM206B) combine the bearing with a cast iron frame for adjustable shaft support and alignment in belt and chain conveyors and in mining, cement and agricultural equipment. [5]
Editorial note: match the bearing unit's shaft bore and the frame's slot to each other — take-up frames are listed by the shaft size range of the bearings they accept. [1] [4]
03
Suppliers linked to this page list take-up units; each card links to the page reviewed.
The listing reviewed covers take-up bearing units and take-up units with frames. Ask each supplier for dimension drawings, travel, shaft range and load ratings for the size you specify. [4] [5]
04
This is a functional reference built from the sources cited; it is not one maker's specification.
05
A take-up unit quotation needs values for your conveyor. The table explains each field, gives published values where a reviewed source states them, and says what to obtain from the supplier.
| Field | What it means and published values | Ask the supplier for |
|---|---|---|
| Take-up Travel | 2–3% of conveyor length; 6–48 in. [1] | Travel. |
| Take-up Force | Pulley load the frame carries. | kN. |
| Belt Width Compatibility | Set by pulley and frame. | mm. |
| Operating Temperature | Bearing and grease limit. | °C. |
| Max Operating Pressure | For hydraulic types only. | MPa. |
| IP Rating | Sealed bearings. [4] | Seal type. |
| Frame Material | Cast iron frame and housing. [5] [4] | Material. |
| Screw Material | Adjusting screw. | Grade; finish. |
| Weight | Unit mass. | kg. |
| Adjustment Accuracy | Screw pitch. | mm/turn. |
06
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Conveyor: [length; type; belt width] Pulley: [diameter; shaft Ø] Travel: [in or mm] Load: [belt tension; pulley load] Frame: [top-angle; centre-pull; wide-slot; tube] Bearing: [UCT type; seals] Environment: [dust; wet; washdown] Quantity: [units]
These companies list take-up units for conveyors.
Lists UCT-type take-up bearing units for 20–55 mm shafts and take-up units with frames.
Product scope checked 2026-10-11
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Martin's take-up frame card sizes travel at 2–3% of conveyor length; its frames offer 6–48 in. [1]
Martin says take-up frames take up belt stretch and keep tension at the drive pulley to reduce slippage. [2]
DEBOT lists UCT-type take-up units for 20–55 mm shafts in grey cast iron housings. [4]
Martin lists top-angle, light/medium, heavy-duty, centre-pull, wide-slot and tube frames. [1]
Sources checked 2026-10-11. Martin Sprocket & Gear's take-up frame nomenclature card and product pages describe frame styles, travel and purpose; DEBOT is a linked supplier whose product pages are cited.
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