Locking Units

Clamping of machinery and plant components

Locking Units

Locking units are used primarily as functional clamps for precision locking, but also for preventing unwanted movement.

Series KFH, KFP, KB…

Extensive standard range with numerous series for special applications, including outdoor, cylinders, machine tools
DGUV and Lloyd’s certified series available
Both load directions

Technical Data & CAD

Function, Simulation & Design

Technical data

Find outer dimensions, CAD files and technical data here.

Downloads

You will find a detailed product description as well as information on the correct size selection, control, design of the rod and much more in the PDF file linked here.

F10 – General Information

Technical data

KFH Series

Hydraulic release, Clamping via spring force, Standard

Feststelleinheiten bauart kfh

DOWNLOADS

SITEMA TI F50 EN

Type	ID no. (order no.)	Rod Ø mm	Holding force kN	press. bar	Casing ∅ mm	Casing Length mm	Download	Price
KFH 18	KFH 018 70	18	10	70	71	137	CAD	Inquiry
KFH 18	KFH 018 71	18	5	40	71	137	CAD	Inquiry
KFH 25	KFH 025 70	25	20	100	95	140	CAD	Inquiry
KFH 25	KFH 025 71	25	12	50	95	140	CAD	Inquiry
KFH 28	KFH 028 70	28	34	100	115	178	CAD	Inquiry
KFH 28	KFH 028 71	28	20	50	115	178	CAD	Inquiry
KFH 32	KFH 032 70	32	34	100	115	178	CAD	Inquiry
KFH 32	KFH 032 71	32	20	50	115	178	CAD	Inquiry
KFH 36	KFH 036 70	36	50	100	138	200	CAD	Inquiry
KFH 36	KFH 036 71	36	35	55	138	200	CAD	Inquiry
KFH 40	KFH 040 70	40	50	100	138	200	CAD	Inquiry
KFH 40	KFH 040 71	40	35	55	138	200	CAD	Inquiry
KFH 45	KFH 045 70	45	75	100	155	223	CAD	Inquiry
KFH 45	KFH 045 71	45	45	75	155	223	CAD	Inquiry
KFH 50	KFH 050 70	50	75	100	155	223	CAD	Inquiry
KFH 50	KFH 050 71	50	45	75	155	223	CAD	Inquiry
KFH 56	KFH 056 70	56	100	100	180	252	CAD	Inquiry
KFH 56	KFH 056 71	56	70	70	180	252	CAD	Inquiry
KFH 60	KFH 060 70	60	100	100	180	252	CAD	Inquiry
KFH 60	KFH 060 71	60	70	70	180	252	CAD	Inquiry
KFH 70	KFH 070 70	70	150	100	225	315	CAD	Inquiry
KFH 70	KFH 070 71	70	80	60	225	315	CAD	Inquiry
KFH 80	KFH 080 70	80	150	100	225	315	CAD	Inquiry
KFH 80	KFH 080 71	80	80	60	225	315	CAD	Inquiry
KFH 90	KFH 090 70	90	250	130	260	393	CAD	Inquiry
KFH 90	KFH 090 71	90	190	100	260	393	CAD	Inquiry
KFH 100	KFH 100 70	100	250	130	260	393	CAD	Inquiry
KFH 100	KFH 100 71	100	190	100	260	393	CAD	Inquiry
KFH 125	KFH 125 70	125	330	100	350	416	CAD	Inquiry
KFH 140	KFH 140 70	140	600	100	430	514	CAD	Inquiry

Versions for other rod diameters (incl. inch sizes) and admissible loads on request.

KFHR Series

Hydraulic release, Clamping via spring force, Outdoor use

Feststelleinheiten bauart KFHR

DOWNLOADS

SITEMA TI F53 EN

Type	ID no. (order no.)	Rod Ø mm	Holding force kN	press. bar	Casing ∅ mm	Casing Length mm	Download	Price
KFHR 18	KFHR 018 70	18	10	70	71	137	CAD	Inquiry
KFHR 18	KFHR 018 71	18	5	40	71	137	CAD	Inquiry
KFHR 25	KFHR 025 70	25	20	100	95	140	CAD	Inquiry
KFHR 25	KFHR 025 71	25	12	50	95	140	CAD	Inquiry
KFHR 28	KFHR 028 70	28	34	100	115	178	CAD	Inquiry
KFHR 28	KFHR 028 71	28	20	50	115	178	CAD	Inquiry
KFHR 32	KFHR 032 70	32	34	100	115	178	CAD	Inquiry
KFHR 32	KFHR 032 71	32	20	50	115	178	CAD	Inquiry
KFHR 36	KFHR 036 70	36	50	100	138	200	CAD	Inquiry
KFHR 36	KFHR 036 71	36	35	55	138	200	CAD	Inquiry
KFHR 40	KFHR 040 70	40	50	100	138	200	CAD	Inquiry
KFHR 40	KFHR 040 71	40	35	55	138	200	CAD	Inquiry
KFHR 45	KFHR 045 70	45	75	100	155	223	CAD	Inquiry
KFHR 45	KFHR 045 71	45	45	75	155	223	CAD	Inquiry
KFHR 50	KFHR 050 70	50	75	100	155	223	CAD	Inquiry
KFHR 50	KFHR 050 71	50	45	75	155	223	CAD	Inquiry
KFHR 56	KFHR 056 70	56	100	100	180	252	CAD	Inquiry
KFHR 56	KFHR 056 71	56	70	70	180	252	CAD	Inquiry
KFHR 60	KFHR 060 70	60	100	100	180	252	CAD	Inquiry
KFHR 60	KFHR 060 71	60	70	70	180	252	CAD	Inquiry
KFHR 70	KFHR 070 70	70	150	100	225	315	CAD	Inquiry
KFHR 70	KFHR 070 71	70	80	60	225	315	CAD	Inquiry
KFHR 80	KFHR 080 70	80	150	100	225	315	CAD	Inquiry
KFHR 80	KFHR 080 71	80	80	60	225	315	CAD	Inquiry
KFHR 90	KFHR 090 70	90	250	130	260	393	CAD	Inquiry
KFHR 90	KFHR 090 71	90	190	100	260	393	CAD	Inquiry
KFHR 100	KFHR 100 70	100	250	130	260	393	CAD	Inquiry
KFHR 100	KFHR 100 71	100	190	100	260	393	CAD	Inquiry
KFHR 125	KFHR 125 70	125	330	100	350	416	CAD	Inquiry
KFHR 140	KFHR 140 70	140	600	100	430	514	CAD	Inquiry

KFHS Series

Hydraulic release, Clamping via spring force, DGUV Test certificate

Feststelleinheiten bauart kfhs

DOWNLOADS

SITEMA TI F55 EN

Type	ID no. (order no.)	Rod Ø mm	Admiss. load kN	press. bar	Casing ∅ mm	Casing Length mm	Download	Price
KFHS 18	KFHS 018 70	18	5	70	71	137	CAD	Inquiry
KFHS 25	KFHS 025 70	25	10	100	95	140	CAD	Inquiry
KFHS 28	KFHS 028 70	28	17	100	115	178	CAD	Inquiry
KFHS 32	KFHS 032 70	32	17	100	115	178	CAD	Inquiry
KFHS 36	KFHS 036 70	36	25	100	138	200	CAD	Inquiry
KFHS 40	KFHS 040 70	40	25	100	138	200	CAD	Inquiry
KFHS 45	KFHS 045 70	45	37	100	155	223	CAD	Inquiry
KFHS 50	KFHS 050 70	50	37	100	155	223	CAD	Inquiry
KFHS 56	KFHS 056 70	56	50	100	180	252	CAD	Inquiry
KFHS 60	KFHS 060 70	60	50	100	180	252	CAD	Inquiry
KFHS 70	KFHS 070 70	70	75	100	225	315	CAD	Inquiry
KFHS 80	KFHS 080 70	80	75	100	225	315	CAD	Inquiry
KFHS 90	KFHS 090 70	90	125	130	260	393	CAD	Inquiry
KFHS 100	KFHS 100 70	100	125	130	260	393	CAD	Inquiry
KFHS 125	KFHS 125 70	125	165	100	350	416	CAD	Inquiry

Versions for other rod diameters (incl. inch sizes) and admissible loads on request.

KFHSR Series

Hydraulic release, Clamping via spring force, DGUV Test certificate, Outdoor use

Feststelleinheiten bauart kfhsr

DOWNLOADS

SITEMA TI F57 EN

Type	ID no. (order no.)	Rod Ø mm	Admiss. load kN	press. bar	Casing ∅ mm	Casing Length mm	Download	Price
KFHSR 18	KFHSR 018 70	18	5	70	71	137	CAD	Inquiry
KFHSR 25	KFHSR 025 70	25	10	100	95	140	CAD	Inquiry
KFHSR 28	KFHSR 028 70	28	17	100	115	178	CAD	Inquiry
KFHSR 32	KFHSR 032 70	32	17	100	115	178	CAD	Inquiry
KFHSR 36	KFHSR 036 70	36	25	100	138	200	CAD	Inquiry
KFHSR 40	KFHSR 040 70	40	25	100	138	200	CAD	Inquiry
KFHSR 45	KFHSR 045 70	45	37	100	155	223	CAD	Inquiry
KFHSR 50	KFHSR 050 70	50	37	100	155	223	CAD	Inquiry
KFHSR 56	KFHSR 056 70	56	50	100	180	252	CAD	Inquiry
KFHSR 60	KFHSR 060 70	60	50	100	180	252	CAD	Inquiry
KFHSR 70	KFHSR 070 70	70	75	100	225	315	CAD	Inquiry
KFHSR 80	KFHSR 080 70	80	75	100	225	315	CAD	Inquiry
KFHSR 90	KFHSR 090 70	90	125	130	260	393	CAD	Inquiry
KFHSR 100	KFHSR 100 70	100	125	130	260	393	CAD	Inquiry
KFHSR 125	KFHSR 125 70	125	165	100	350	416	CAD	Inquiry

Versions for other rod diameters (incl. inch sizes) and admissible loads on request.

KFHA Series

Hydraulic release, Clamping via spring force, Suitable for standard cylinders

Feststelleinheiten bauart kfha

DOWNLOADS

SITEMA TI F60 EN

Type	ID no. (order no.)	Rod Ø mm	Holding force kN	press. bar	Casing Length mm	Edge length mm	Download	Price
KFHA 40-18	KFHA 040 018 050-1	18	9	50	107	110 × 88	CAD	Inquiry
KFHA 40-18	KFHA 040 018 070-1	18	11	70	107	110 × 88	CAD	Inquiry
KFHA 50-22	KFHA 050 022 050-1	22	12	50	127	130 × 110	CAD	Inquiry
KFHA 50-22	KFHA 050 022 070-1	22	20	70	127	130 × 110	CAD	Inquiry
KFHA 50-28	KFHA 050 028 050-1	28	12	50	127	130 × 110	CAD	Inquiry
KFHA 50-28	KFHA 050 028 070-1	28	20	70	127	130 × 110	CAD	Inquiry
KFHA 63-28	KFHA 063 028 050-1	28	14	50	157	145 × 130	CAD	Inquiry
KFHA 63-28	KFHA 063 028 070-1	28	20	70	157	145 × 130	CAD	Inquiry
KFHA 63-28	KFHA 063 028 100-1	28	32	100	157	145 × 130	CAD	Inquiry
KFHA 63-36	KFHA 063 036 050-1	36	14	50	157	145 × 130	CAD	Inquiry
KFHA 63-36	KFHA 063 036 070-1	36	20	70	157	145 × 130	CAD	Inquiry
KFHA 63-36	KFHA 063 036 100-1	36	32	100	157	145 × 130	CAD	Inquiry
KFHA 80-36	KFHA 080 036 050-1	36	34	50	184	180 × 164	CAD	Inquiry
KFHA 80-36	KFHA 080 036 070-1	36	52	70	184	180 × 164	CAD	Inquiry
KFHA 80-45	KFHA 080 045 050-1	45	34	50	184	180 × 164	CAD	Inquiry
KFHA 80-45	KFHA 080 045 070-1	45	52	70	184	180 × 164	CAD	Inquiry
KFHA 100-45	KFHA 100 045 050-1	45	32	50	210	200 × 180	CAD	Inquiry
KFHA 100-45	KFHA 100 045 070-1	45	55	70	210	200 × 180	CAD	Inquiry
KFHA 100-45	KFHA 100 045 100-1	45	75	100	210	200 × 180	CAD	Inquiry
KFHA 100-56	KFHA 100 056 050-1	56	32	50	210	200 × 180	CAD	Inquiry
KFHA 100-56	KFHA 100 056 070-1	56	55	70	210	200 × 180	CAD	Inquiry
KFHA 100-56	KFHA 100 056 100-1	56	75	100	210	200 × 180	CAD	Inquiry
KFHA 125-56	KFHA 125 056 050-1	56	80	50	248	250 × 234	CAD	Inquiry
KFHA 125-56	KFHA 125 056 100-1	56	125	100	248	250 × 234	CAD	Inquiry
KFHA 125-70	KFHA 125 070 050-1	70	80	50	248	250 × 234	CAD	Inquiry
KFHA 125-70	KFHA 125 070 100-1	70	125	100	248	250 × 234	CAD	Inquiry

Versions for other rod diameters (incl. inch sizes) and admissible loads on request.

KB Series

Hydraulic, Clamping via Pressure, Standard

Feststelleinheiten bauart kb

DOWNLOADS

SITEMA TI F15 EN

Type	ID no. (order no.)	Rod Ø mm	Holding force kN	press. bar	Casing ∅ mm	Casing Length mm	Download	Price
KB 40	KB 040 10	40	80	130	138	193	CAD	Inquiry
KB 56	KB 056 10	56	140	160	170	227	CAD	Inquiry
KB 80	KB 080 10	80	210	160	226	266	CAD	Inquiry
KB 200	KB 200 10	200	1500	140	455	544	CAD	Inquiry
KB 100	SK 100 059	100	330	130	280	322	CAD	Inquiry
KB 110	SK 110 032	110	450	130	300	344	CAD	Inquiry
KB 125	SK 125 034	125	450	130	300	344	CAD	Inquiry
KB 140	SK 140 030	140	600	130	335	392	CAD	Inquiry
KB 160	SK 160 021	160	800	130	375	402	CAD	Inquiry
KB 180	SK 180 013	180	950	130	405	434	CAD	Inquiry
KB 200	SK 200 013	200	1100	130	425	444	CAD	Inquiry

Versions for other rod diameters (incl. inch sizes) and admissible loads on request.

KFPC Series

Pneumatic release, Clamping via spring force, Standard

Feststelleinheiten bauart kfpc

DOWNLOADS

SITEMA TI F21 EN

Type	ID no. (order no.)	Rod Ø mm	Holding force kN	press. bar	Casing ∅ mm	Casing Length mm	Download	Price
KFPC 20	KFPC 020 20	20	11	5	112	140	CAD	Inquiry
KFPC 30	KFPC 030 20	30	22	5	136	180	CAD	Inquiry
KFPC 40	KFPC 040 20	40	44	5	205	235	CAD	Inquiry

Versions for other rod diameters (incl. inch sizes) and admissible loads on request.

KFPA Series

Pneumatic release, Clamping via spring force, Standard

Feststelleinheiten bauart kfpa

DOWNLOADS

SITEMA TI F22 EN

Type	ID no. (order no.)	Rod Ø mm	Holding force kN	press. bar	Casing Length mm	Edge length mm	Download	Price
KFPA 40-16-Z	KFPA 040 016-1	16	0.9	4	80	54 × 54	CAD	Inquiry
KFPA 40-16-S	KFPA 040 016-2	16	0.9	4	80	54 × 54	CAD	Inquiry
KFPA 50-20-Z	KFPA 050 020-1	20	1.6	4	99	64 × 64	CAD	Inquiry
KFPA 50-20-S	KFPA 050 020-2	20	1.6	4	99	64 × 64	CAD	Inquiry
KFPA 63-20-Z	KFPA 063 020-1	20	2.2	4	101	75 × 75	CAD	Inquiry
KFPA 63-20-S	KFPA 063 020-2	20	2.2	4	101	75 × 75	CAD	Inquiry
KFPA 80-25-Z	KFPA 080 025-1	25	4.2	4	110	96 × 96	CAD	Inquiry
KFPA 80-25-S	KFPA 080 025-2	25	4.2	4	110	96 × 96	CAD	Inquiry
KFPA 100-25-Z	KFPA 100 025-1	25	6.9	4	115	115 × 115	CAD	Inquiry
KFPA 100-25-S	KFPA 100 025-2	25	6.9	4	115	115 × 115	CAD	Inquiry
KFPA 125-32-Z	KFPA 125 032-1	32	8.7	4	130	145 × 145	CAD	Inquiry
KFPA 125-32-S	KFPA 125 032-2	32	8.7	4	130	145 × 145	CAD	Inquiry
KFPA 160-40-Z	KFPA 160 040-1	40	10.9	4	140	180 × 180	CAD	Inquiry
KFPA 160-40-S	KFPA 160 040-2	40	10.9	4	140	180 × 180	CAD	Inquiry

Versions for other rod diameters (incl. inch sizes) and admissible loads on request.

Applications

Automation in refinery industry

Bending press

Lathe

Betonsteinmaschine

Machine for concrete bricks

Machine tool

Machining a large telescope mirror

Mobile crushing plant

Steelworks

Suspension bridge

Prufstand fur betontrager

Test rig for concrete beams

Welding machine

Did you know that…?

…SITEMA Locking Units will be used in a new combined car/train vertical-lift bridge to keep the deck down and prevent trains from derailing?

Did you know that…?

…SITEMA Locking Units are available in the “outdoor” version KFHR?

Did you know that…?

…SITEMA Locking Units are used in big tunnel boring machines?

Did you know that…?

…SITEMA Locking Units are used even in a suspension bridge?

Did you know that…?

…SITEMA builds hydraulic Locking Units for standard cylinders according to ISO 6020/2?

Did you know that…?

…SITEMA locking units to secure yacht tender doors?

Did you know that…?

…SITEMA Locking Units secure bathing platforms of yachts?

Did you know that…?

…SITEMA Locking Units can also be used in filling systems for tank wagons?

Did you know that…?

…SITEMA Locking Units are used in submarines?

Did you know that…?

…the largest SITEMA clamping unit ever built is being used to secure a test rig for wind turbine rotors in northern Germany?