RotoClamp * LinClamp * pClamp

Pneumatic Clamp Systems
for rotational and linear use and mounting
Technical Data and Inquiry Sheets
News 2006 (2)
RotoClamp * LinClamp * pClamp

RotoClamp S
RotoClamp – Standard sizes
RotoClamp S is available in standard sizes with an internal diameter from 50 to 90 mm. Clamps with other dimensions to provide appropriate clamping
performance can be developed to suit customer requirements. The required clamping performance can be increased by stacking and series connecting
RotoClamp S type clamps. The application of additional pneumatic back pressure on the lamella diaphragms can be used to increase the clamping torque.
The assembled thickness of the RotoClamp S is 15 mm, please consider for future designs 22 mm.
Sizes Ø D1 Recommended
flange diameter
Ø D2 Ø D3 E F Elastic moment Elastic moment
with additional
air (booster)
Maximum
clamping
moment
The stated clamping moments apply with an operating pressure of 5.5 bar – 6.5 bar, clamping moment is reduced to
approx. 70% of listed values for 4 bar versions. Please ask your sales consultant if your required size is available with
additional air.
Maximum
clamping
moment with
additional air
(booster)
Tolerance +0,04 bis +0,06 -0,01 bis -0,025 ±0,1
Concentricity 0.010 0.010
Roughness Ra 0,8 1,6
µm µm
RC 50 S 50 50 134 145 63.5 67.5 60 108 100 180
RC 60 S 60 60 144 155 68.5 72.5 84 153 140 255
RC 70 S 70 70 154 165 73.5 77.5 114 210 190 350
RC 80 S 80 80 164 175 78.5 82.5 150 270 250 450
RC 90 S 90 90 174 185 83.5 87.5 189 342 315 570
The friction surface of the RotoClamp is hardened and tempered (Material: Steel heat treated to 1,000 to 1,100 N/mm 2).
The shaft can be supplied in any steel material, but it should be nitrided in order to guard against fretting corrosion.
Product line S
050 - 095
RotoClamp S

RotoClamp S
Product line S
50 - 65
RotoClamp S

RotoClamp S
Product line S
70 - 95
RotoClamp S

RotoClamp N
RotoClamp N – Standard Sizes
Product line N
100 - 340
RotoClamp N
RotoClamp N is available in standard sizes with an internal diameter from 100 to 340 mm. Clamps with other dimensions to provide appropriate clamping
performance can be developed to suit customer requirements. The requisite clamping performance can be increased by stacking and multiple connecting
RotoClamp N type clamps. The application of additional pneumatic back pressure on the lamella diaphragms can be used to increase the clamping torque. The
assembled thickness B of the RotoClamp N is depending on the diameter and varies from 16 to 22 mm, alternative thickness in brackets.
Sizes Ø D1 Recommded
flange diameter
Ø D2 Ø D3 B E F Elastic moment Elastic moment
with additional
air (booster)
Maximum
clamping
moment
Maximum
clamping
moment with
additional air
(booster)
Roughness Ra 0,8 1,6
µm µm
Tolerance +0,04 bis +0,06 -0,01 bis -0,025 ±0,1
Concentricity 0.010 0.010
RC 100 N 100 100 210 228 16 (20) 103 103 240 420 400 700
RC 120 N 120 120 230 248 16 (20) 113 113 336 600 560 1000
RC 140 N 140 140 250 268 16 (20) 123 123 456 840 760 1400
RC 160 N 160 160 270 288 16 (20) 133 133 600 1080 1000 1800
RC 180 N 180 180 290 308 20 (28) 137 143 750 1380 1250 2300
Tolerance +0,05 bis +0,07 -0,01 bis -0,03 ±0,1
Concentricity 0.015 0.015
RC 200 N 200 200 310 328 20 (28) 147 153 930 1680 1550 2800
RC 220 N 220 220 330 348 20 (28) 157 163 1110 2040 1850 3400
RC 240 N 240 240 350 368 20 (28) 167 173 1350 2400 2250 4000
RC 260 N 260 260 370 388 22 (28) 177 183 1560 2820 2600 4700
RC 280 N 280 280 390 408 22 (28) 187 193 1800 3240 3000 5400
RC 300 N 300 300 410 428 22 (28) 197 203 2100 3720 3500 6200
RC 320 N 320 320 430 448 22 (28) 207 213 2340 4200 3900 7000
RC 340 N 340 340 450 468 22 (28) 217 223 2580 4680 4300 7800
The stated clamping moments apply with an operating pressure of 5.5 bar – 6.5 bar, clamping moment is reduced to approx. 70%
of listed values for 4 bar versions. Please ask your sales consultant if your required size is available with additional air.
The friction surface of the RotoClamp is hardened and tempered (Material: Steel heat treated to 1,000 to 1,100 N/mm 2). The shaft
can be supplied in any steel quality, but it should be nitrided in order to guard against fretting corrosion.

RotoClamp N
Product line N
100 - 160
RotoClamp N

RotoClamp N
Product line N
180 - 220
RotoClamp N

RotoClamp N
Product line N
240 - 340
RotoClamp N

RotoClamp L
RotoClamp – L Special sizes
The stated clamping moments apply with an operating pressure of 4 bar, clamping moment without booster can be higher for 5.5
bar versions. Please ask your sales consultant if your required size is available with additional air.
The friction surface of the RotoClamp is hardened and tempered (Material: Steel heat treated to 1,000 to 1,100 N/mm 2). The shaft
can be supplied in any steel quality, but it should be nitrided in order to guard against fretting corrosion.
Options
RotoClamp
RotoClamp L is available in listed standard sizes. Clamps with other dimensions to provide appropriate clamping performance can be
developed to suit customer requirements. The requisite clamping performance can be optimally achieved by stacking and multiple connecting
RotoClamp L type clamps. The application of additional pneumatic back pressure on the lamella diaphragms can be used to increase the
clamping torque. The assembled thickness B of the RotoClamp L is 22 mm.
Sizes Ø D1 Recommded flange
diameter
Ø D2 Ø D3 B E F Elastic moment Elastic moment
with additional
air (booster)
Maximum
clamping
moment
Maximum
clamping
moment with
additional air
(booster)
Roughness Ra 0,8 1,6
µm µm
Tolerance +0,04 bis +0,06 -0,01 bis -0,025 ±0,1
Concentricity 0.010 0.010
RC 70 L 70 70 204 225 22 100 100 114 210 190 350
RC 140 L 140 140 274 295 22 135 135 456 840 760 1400
RC 180 L 180 180 314 335 22 155 155 750 1380 1250 2300
Tolerance +0,04 bis +0,06 -0,01 bis -0,025 ±0,1
Concentricity 0.010 0.010
RC 200 L 200 200 334 355 22 165 165 930 1680 1550 2800
RC 220 L 220 220 354 375 22 175 175 1110 2040 1850 3400
RC 240 L 240 240 374 395 22 185 185 1350 2400 2250 4000
RC 280 L 280 280 414 435 22 205 205 1800 3240 3000 5400
RC 320 L 320 320 454 475 22 225 225 2340 4200 3900 7000
RC 340 L 340 340 474 495 22 235 235 2580 4680 4300 7800

RotoClamp
RotoClamp – Option: shaft flange for standard sizes
RotoClamp is also available as a complete unit with adapter rings according to your shaft requirements and in different materials.
Options: Flanges (to be mounted on to the shaft) of
following qualities:
- C45 in standard version, suited for most applications
-Other:ideal gliding qualities
Options
RotoClamp
Sizes Ø A Ø B
n counter
sink
Tolerance H7 ± 0.1 mm
Cylinder shape 0.015 mm
100 60 80 8
120 80 100 8
140 100 120 8
160 110 136 12
180 130 156 12
200 150 176 12
220 170 196 12
240 190 216 12
260 210 236 12
280 230 256 12
300 250 276 12
320 270 296 12

RotoClamp
RotoClamp
RotoClamp – Installation and Assembly
Optional shaft ring
Locating pins
Shaft
Ensure rigid connection for effective force transfer !
Counter bore for
screws according
DIN 6912 / DIN 7984,
Mounting taps
as option
RC should never be supported
completely, allow area to
move freely: Consider
diameter D3 minus 60 mm
Installation / Assembly
RotoClamp
General:
• To maximize clamping force transfer, a rigid
connection to the machine structure is necessary.
• Especially with large RotoClamp, from 160 mm
on, clamping leads to radial expansion of the
case. This expansion reduces the clamping force.
• The clamping moments stated in the catalogue
can only be obtained with the proper construction.
We are always willing to assist.
Assembly procedure shaft flange:
• The shaft seat should be an g6 fitting. The shaft
ring is screwed on and concentrically aligned.
• Finally the remaining gap (approx. 0.1 mm) is
filled with compound filler, such as Loctite 638.
Assembly procedure RotoClamp:
• Connect air to RotoClamp, this must be in
unclamped mode. Then move it over shaft in the
desired position, adjust it and tighten screws with
reduced torque moment.
• After you have built in the RotoClamp, reduce air
pressure to 0 Bar until RotoClamp is centered
fully onto shaft.
• When RotoClamp is placed in the final position
tighten screws fully with the defined required
torque moment
• Additional pins can be used.

RotoClamp
Technical Notes
Construction
Details
RotoClamp
1. The accuracy of the clamping surfaces is
obtained by internal cylindrical grinding to the
given dimensions. The axial concentricity of the
clamping surfaces to the bolt-on surfaces is less
than 0.015 mm.
2. The width of the clamping surface is approx. 7
mm. Based on analysis of supporting images it
can be seen that in the region between 2.5 and
3 mm a high surface pressure is produced.
3. The maximum bending stress on the clamping
lips of the RotoClamp (without shaft) is approx.
600 N/mm². The bending stress with a solid
shaft is approx. 30 to 40 N/mm², with a hollow
shaft, the values should lie in between. The
hollow shaft must be designed to overtake the
forces applied by the clamp.
4. Applicable torque (example):
Use of 12.9 screws M8 with a pre-tensioning
force 30,700 N per screw, a friction value of
µ=0,1 and Radius 100mm a transferable torque
of 307 Nm per screw is achieved.
5. Concentricity of the shaft when assembled
should be less than 0.010 mm.
6. Monitor the alignment and mounting of the
clamps during procedure.
7. Check the air flow in stacked clamps. Ideally
stacked clamp solutions must be delivered preassembled
by us. Please inform us if you intend
to use this version.
8. RotoClamp cannot be supported from the
outside diameter.

RotoClamp
Warranty and how to enable long trouble-free operation
1. Check mounting and installation of RC: Tightening moments,
select suitable property classes of screws, make sure that the
machine surface for RC is surface grinded
2. The area where RC is mounted needs to have a minimum free
area of 0.1 mm (D3 - 60mm), so that the RC is not supported
completely.
3. The locating surface for RotoClamp must be geometrically
perfect, ideally surface ground.
4. Consider and specify tightening moments of screws
5. Respect shaft tolerances, concentricity, surface conditions,
shaft and mounting area for clamp, gap tolerances between
shaft and clamp
6. Check and select suitable air supply , length of air hoses, type
of valves
7. All RotoClamp needs to be tested for life-time, precision,
clamping forces and speed of clamping when usage in massproduction
is considered, clamping forces and clamping
behavior can change depending on the ambient influences of
the system
8. Specify expected number of clamping cycles per year and
clamping cycle rate
9. Specify the maximum required clamping force in the application,
estimate the average clamping force, give the calculated safety
factor to determine the ideal clamping type combination
(consider 60% as safety factor), consider Elastic moment and
holding forces.
10. Customer machine design should support easy (de)mounting of
RotoClamp and good access to allow quick and cost-effective
service
11. Warranty 12 months according our general terms of business
and supply.
Inquiry sheet
RotoClamp
Name of company : _______________________________________
Contact: _______________________________________
Phone/Fax: ___________________ / ___________________
E-Mail/Internet: ___________________ / ___________________
Important questions for your RotoClamp – solution:
Application: _______________________________________
_______________________________________
(Drawing of application to be attached or to be e-mailed to info@hema-schutz.de)
Project partner (e.g. supplier of different construction parts): _________________
Clamping cycles: ________ per year, special requirements __________
Clamping torque: ________ Nm
Dimensions (all specifications in mm):
Outer diameter D3: ___________ Inside diameter D1: ___________
Flange diameter D2: ___________ Height: ___________
Standard hole positioning as shown in drawing : YES / NO
For deviating options: Please send drawing or e-mail to info@hema-schutz.de)
Optional adapter ring of _____________
Number of pieces: ______________ Delivery date: _______________
Additional data:
Visit is needed / We wish a return call for further information __________________

LinClamp S
Standard sizes
Linear Rail Version
Rail sizes
20
25
30
35
45
55
65
Technical data:
L
97.5
117.5
126.5
156.5
176.5
202.5
259.5
Technical data
LinClamp S LinClamp S
B
43
47
59
69
80
98
120
H
High
Carriage
30
40
45
55
70
80
100
H1
29
32.5
42
52
59
74
A
19.5
20
29.5
36.5
38
48
H
Large
Carriage
30
36
42
48
60
70
90
H1
19.5
25
29.5
35
42
49
64
A
13.5
15.5
17
22.5
26.5
28
38
B1
6
6
10
10
10
12.5
15
C
15
20
24
24
26
30
40
G
M5
M5
M5
1/8"
1/8"
1/8"
1/4“
M
M5
M6
M8
M8
M10
M12
M12
Holding Force*
900 N
1.200 N
1.800 N
2.800 N
4.000 N
6.000 N
10.000 N
*Holding forces are valid for roller guide ways (INA, STAR) on dry rail, other conditions and rail types upon request. Consider only about 60% of listed holding
forces for greasy rails depending on type of grease used. Special clamp pads with 100% holding forces (not for braking) are available for greasy rails. Clamp is
released at an operating pressure of 5.5 – 6 bar, other operating pressures available on request

LinClamp SA / SK
LinClamp SK (Safety Clamp)
LinClamp SA (Clamps with Air)
New Types
LinClamp SA /SK
Rail version
Type Rail sizes L B H H1 A B1 C G M
Holding
forces*
SA 25 40 75 36 23 15 5 20 M5 M6 500 N - 800 N
SK 25 55,5 75 36 32,5 16 5 20 M5 M6 upon request
SK 35 67 96 48 40 20 8,75 24 G 1/8 M8 upon request
*Holding forces are valid for roller guide ways (INA, STAR) on dry rail, other conditions and rail types upon request. Consider only about 60% of listed holding
forces for greasy rails depending on type of grease used. Special clamp pads with 100% clamping force (not for braking) are available for greasy rails. Clamp is
released at an operating pressure of 5.5 – 6 bar, other operating pressures available on request

Types 25, 35 Types 35, 45 Type 25
Technical Data
Types
25
35
45
LinClamp A
L
140
212
262
B
28.15
29.45
29.2
H
60
81
91
H1
36
55
65
*Braking forces are depending on the surface material, clamp is released at an operating pressure of 4 bar.
Type 25 has a holding force of 500 N and type 35 of 800 N.
A
17
19
19
C
4
8
8
D
6.8
6.8
8.5
E
50
50
60
F
80
150
180
G
3.5
3.5
3.5
I
17
14
14
J
19
22
22.5
K
18
18
18
LinClamp A

LinClamp
Important questions for your LinClamp – solution:
Name of company: _______________________________________
Contact: _______________________________________
Phone/Fax: ___________________ / ___________________
E-Mail/Internet: ___________________ / ___________________
LinClamp Type according data table: ___________________________
Number of pieces: ______________
Delivery date: _______________
Additional data:
Visit is needed _____________
We wish a return call for further information ______________
Others __________________
LinClamp systems can be modified for different applications.
Inquiry sheet
LinClamp
The following criteria are the basis for the individual configuration of the system.
Provide as much as possible detailed and complete information:
Usage horizontal vertical (with PLC) vertical (uncontrolled, free fall)
System should open with air clamp with air
Holding force ________ N Air pressure: ________ bar
Required braking distance ____ mm Reaction time (customer system) ____ sec.
Used as a) Brake b) Emergency brake c) Safety catch
d) Clamp e) Operating (process) clamp
Number of clamping cycles per hour : __________________
Required minimum lifetime (Number of cycles) ________________
Operating condition: dry oiled with grease
Exact type of oil/grease : ______________________________________________
Rail manufacturer, Type, Size __________________________________________
Type of carriage (high/wide): ___________________________________________
Other clamp types used/considered _____________________________________

pClamp N
(P) Pneumatic Cylinder -
(K) Piston Rod -
(M) Number of Clamping
Moduls A B C D Air supply E
Holding
force in N
with 4 bar
opening
pressure
Forces and Sizes
Holding
force in N
with 6 bar
opening
pressure
pClamp
Standard
rod
diameter in
mm
PC 63-20-1 75 56.5 8.5 39.5 M5 2.1 1400 2000 20
PC 63-20-2 75 56.5 8.5 57.5 M5 2.1 2520 3600 20
PC 63-20-3 75 56.5 8.5 75.5 M5 2.1 3780 5400 20
PC 80-25-1 96 72 10.5 41.5 G 1/8 2.14 2100 3000 25
PC 80-25-2 96 72 10,5 61.5 G 1/8 2.14 3780 5400 25
PC 80-25-3 96 72 10.5 81.5 G 1/8 2.14 5670 8100 25
PC 125-40-1 145 110 13 53 G 1/8 3 7000 10000 40
PC 125-40-2 145 110 13 78 G 1/8 3 12600 18000 40
PC 125-40-3 145 110 13 103 G 1/8 3 18900 27000 40
Listed holding forces can be reached under optimal conditions, we recommend to calculate with a minimum safety factor of 10%. Please pay attention
to surface conditions, material, wearing and cleanness of the rod and rod wipers which will lead to different holding forces. Please determine for safety
or mass production applications the real holding force in your later application environment.

p-Clamp
Inquiry sheet
p-Clamp
Company name: _______________________________________
Contact person: _______________________________________
Phone/Fax: ___________________ / ___________________
E-Mail/Internet: ___________________ / ___________________
PClamp-systems can be modified for different applications.
The following criteria are the basis for the individual configuration of the system.
Provide as much as possible detailed and complete information:
PClamp-Type according data table: _______ N-Type X-Type
System can only open with air, standard air pressure 4 bar 6 bar
Usage horizontal vertical (with PLC) vertical (uncontrolled, free fall)
Required holding force ________ N Number of modules: ____________
Required holding distance ____ mm Reaction time (customer system) ____ sec.
Number of clamping cycles per hour: __________________
Requested minimum life cycles (Number of cycles) ________________
Operating conditions: dry oil grease
Exact type of oil/grease : ___________________________________
Piston diameter: ________ mm
Manufacturer of cylinder: ___________________________________________
Description of cylinder: ____________________________________________
Piston rod wiper:_ _________________________________________________
Quantity: ______________ Delivery Date : _______________
Visit is needed ____ We wish a return call for further information ____
Others __________________________________________________________

RotoClamp * p-Clamp * LinClamp
Hema Maschinen- und Apparateschutz GmbH Hema Representative:
Seligenstädter Strasse 82
D – 63500 Seligenstadt
Phone: +49-(0)6182-773-0
Fax: +49-(0)6182-773-35
Internet: www.hema-gmbh.com
Email: info@hema-schutz.de
Release: February 2006, subject to change without prior notice. Publication only with written authorisation from Hema and InnoTech.
All technical data and drawings in the catalogue are standard values, which might be different in the actual customer application. Listed
data are not binding, final binding values are confirmed on the actual sales order. Please pay extra care to mounting holes and
assembly details.
RotoClamp, p-Clamp and LinClamp are developments of InnoTech Engineering GmbH.