Flagship

Precision Ball Splines

UVT miniature ball splines transmit torque and linear motion in a compact space. Starting at Φ3 mm, they are built for SMT heads, semiconductor handlers and micro-assembly equipment where every gram and every micron counts.

Ø3–100 mmMicro subset Ø3–8 mm · Ball Splines only

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Structure

Structure & Working Principle

Precision-ground spline shaft with raceway grooves, HRC 60±2
Recirculating steel balls carry radial load and torque simultaneously
Optional preload to eliminate angular backlash
Cylindrical, round-flanged and cut-flanged series

Series & Models

Ball Splines Series

UVT Cylindrical Series

Straight cylindrical nut for compact housings.

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UVTF Flanged Series

Flanged nut for direct bolt-on mounting.

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ULT Series

Cylindrical nut, standard catalog sizes.

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ULF Series

Flanged nut, standard catalog sizes.

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USLT Series

Long-nut variant for higher load capacity.

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USLF Series

Long-nut variant for higher load capacity.

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USPT Series

Compact variant for small shafts.

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US Series

Limited-stroke miniature spline.

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All catalog models (50)

Model	Shaft d / OD D (mm)	C (N)	C₀ (N)	Details
UVT 3	3 / 7	251	285	View model →
UVT 4	4 / 8	303	380	View model →
UVT 5	5 / 10	587	641	View model →
UVT 6	6 / 12	711	855	View model →
UVT 8	8 / 15	1190	1330	View model →
UVT 10	10 / 19	1880	2150	View model →
UVT 12	12 / 21	2180	2690	View model →
UVT 15	15 / 23	4180	6070	View model →
UVT 20	20 / 30	6600	9040	View model →
UVT 25	25 / 37	11200	14300	View model →
UVT 30	30 / 45	15400	19400	View model →
UVT 40	40 / 60	21300	31600	View model →
UVT 50	50 / 75	27400	On request	View model →
UVTF 10	10 / 19	1880	2150	View model →
UVTF 12	12 / 21	2180	2690	View model →
UVTF 15	15 / 23	4180	6070	View model →
UVTF 20	20 / 30	6600	9040	View model →
UVTF 25	25 / 37	11200	14300	View model →
UVTF 30	30 / 45	15400	19400	View model →
UVTF 40	40 / 60	21300	31600	View model →
ULT 4	4 / 10	860	1220	View model →
ULT 5	5 / 12	1075	1525	View model →
ULT 6	6 / 14	1220	2280	View model →
ULT 8	8 / 16	1450	2870	View model →
ULT 10	10 / 21	2670	4890	View model →
ULT 13	13 / 24	2730	On request	View model →
ULT 16	16 / 31	6120	11200	View model →
ULT 20	20 / 35	8900	16300	View model →
ULT 25	25 / 42	12800	23200	View model →
ULT 30	30 / 47	18600	23400	View model →
ULT 40	40 / 64	30800	37500	View model →
ULT 50	50 / 80	40300	64900	View model →
ULT 60	60 / 90	47700	79500	View model →
ULT 80	80 / 120	92800	108000	View model →
ULT 100	100 / 150	151000	160000	View model →
ULF 6	6 / 14	1220	2280	View model →
ULF 8	8 / 16	1450	2870	View model →
ULF 10	10 / 21	2670	4890	View model →
ULF 13	13 / 24	2730	On request	View model →
ULF 16	16 / 31	6120	11200	View model →
ULF 20	20 / 35	8900	16300	View model →
ULF 25	25 / 42	12800	23200	View model →
ULF 30	30 / 47	18600	23400	View model →
ULF 40	40 / 64	30800	37500	View model →
ULF 50	50 / 80	40300	64900	View model →
ULF 60	60 / 90	47700	79500	View model →
US 4	4 / 8	285	380	View model →
USA 4	4 / 8	285	380	View model →
US 5	5 / 10	616	748	View model →
USA 5	5 / 10	673	855	View model →

Engineering

Before Selecting a Model

Shaft and housing envelope, nut retention / flange dimensions, shaft length, travel, radial load and load direction, torque, speed, duty cycle, accuracy, preload and lubricant/environment.

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