Specifications: HFTK40F is an AirTAC 40 mm roller-guided parallel gripper. It is single acting, normally open. Bottom-mounted jaw attachment. The specification and dimensions below apply to the 2022 catalog configuration identified by the individual code elements.
Product Catalog
Download Airtac Product Catalog (PDF)
Download AirTAC 2022 Sensor and Mounting Compatibility Guide (PDF)
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
This model code
Parameter
Details
HFTK
roller-guided parallel gripper; single acting, normally open
40
40 mm nominal bore
F
Bottom-mounted jaw attachment
Design and operating features
Crossed-roller guidance supports precise parallel jaw motion and higher allowable vertical load than the ball-guided HFZ reference.
Locating holes support fixture alignment. The jaw attachment form is selected by the actual suffix, independently of the cylinder-body mounting method.
Technical specifications
Parameter
Details
Nominal bore
40 mm
Actuation
single acting, normally open
Working medium
Compressed air, filtered through a 40 μm filter element
Operating temperature
−20 to +70 °C
Port thread
M5×0.8
Operating pressure
0.25–0.7 MPa
Lubrication
No oil supply required
Repeatability
±0.02 mm
Maximum operating frequency
60 cycles/min
Pneumatically driven closing force, one jaw
220 N
Gripping-force rating condition
0.5 MPa operating pressure; gripping point L = 20 mm
Opening/closing travel, both jaws combined
30 mm
Compatible position sensors
The 2022 selection information for HFK40 lists G profile: CMSG / DMSG / EMSG; H profile: CMSH / DMSH / EMSH. Select the full sensor code for the required output, supply voltage, cable length and connector. Sensors are ordered separately; a matching mounting profile alone does not specify the electrical configuration.
Gripping-force and gripping-point selection
Select effective gripping force for the actual air pressure, jaw contact position and friction. The catalog uses F ≥ a × m × g / (n × μ), where F is force per jaw, n is the number of contacting jaws, μ is the attachment/workpiece friction coefficient, m is workpiece mass and g = 9.8 m/s². With two jaws and safety factor a = 4, μ = 0.2 requires approximately 10 × m × g per jaw and μ = 0.1 requires 20 × m × g. Allow a larger safety margin for high acceleration or impact; even at higher friction the catalog retains the conservative 10–20 times guideline.
Check closing and opening force curves separately. Also check the gripping-point length L and overhang H together against the permitted gripping-range graph. Long or heavy fingers increase inertia even when the static force is sufficient. For very thin workpieces, provide the relief gap shown in the selection drawings to prevent unstable contact or positional offset.
Allowable static external loads
Parameter
Details
Vertical load Fv
735 N
Pitch moment Mp
4.5 N·m
Yaw moment My
4.5 N·m
Roll moment Mr
9 N·m
Moment-load conversion
Allowable external force = M / (L × 10⁻³), with M in N·m and lever arm L in mm. These are static load limits, not impact ratings.
Dimensions for this configuration
Linear drawing dimensions are in mm unless a thread or angle is stated. Letter labels retain their meaning in the corresponding catalog view. Only the current action and attachment form are selected; parenthesized single-acting values from the source are resolved to this model.
Parameter
Details
A
152
AB
96
B
48
C
132
CA
72
D
18
DA
41.5
DB
22
E
M8×1.25
EA
16
EB
24
K
M8×1.25
KA
12
KB
56
KC
62
L
M8×1.25
LA
16
LB
56
LC
32
M
M8×1.25
MA
12
MB
32
MC
71
N
42 (+0.05/0)
NA
2.5
P
M5×0.8
PA
10.5
PB
50
PC
28
UA
33 (+3/0)
UB
3.4 (0/−0.5)
DC
6 (+0.04/+0.01)
DE
17.7
DF
6
EC
8.7
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Internal structure and principal materials
Parameter
Details
1 Pivot pin
Stainless steel
2 Pin
Stainless steel
3 Crank
Stainless steel
4 Piston rod
Aluminum alloy / stainless steel
5 Body
Aluminum alloy
6 Piston
Aluminum alloy / stainless steel
7 Rear cover
Brass / aluminum alloy
8 Magnet retaining plate
Aluminum alloy / stainless steel
9 Guide
Alloy steel
10 Countersunk socket screw
Alloy steel
11 Countersunk socket screw
Alloy steel
12 Pin
Bearing steel
13 O-ring
NBR
14 O-ring
NBR
15 Magnet
Sintered neodymium-iron-boron
16 C-type retaining ring
Spring steel
17 Bumper
TPU
18 Magnet pad
NBR
19 Rod seal
NBR
20 Piston seal
NBR
21 Jaw
Bearing steel
22 Roller
Bearing steel
Part numbers refer to this series and the illustrated configuration. The parts list describes construction; it is not a supplied spare-parts kit or an independent ordering list.
Accessories and configuration boundaries
Custom workpiece fingers mount to the current jaw attachment holes. The jaw suffix selects the factory attachment form; the drawings of fixture fingers do not establish a separately supplied accessory kit. Match screw threads, engagement depth and tightening torque to this bore and jaw form.
Mounting screws and tightening limits
Parameter
Details
Rear mounting
M8×1.25; maximum 17.7 N·m; maximum engagement 16 mm
Front threaded mounting
M8×1.25; maximum 17.7 N·m; maximum engagement 12 mm
Front through mounting
M6×1; maximum 7.3 N·m; maximum engagement 16 mm
Side mounting
M8×1.25; maximum 13.7 N·m; maximum engagement 12 mm
Jaw attachment
M8×1.25; maximum 11.8 N·m
The mounting method names above refer to cylinder-body attachment. Jaw suffix B, N, F, R, W or M describes the separate jaw attachment geometry. Use the dimensions of the selected jaw rather than treating these suffixes as a body-mount kit.
Installation and safe operation
Install a workpiece fall-prevention device wherever loss of circuit pressure could release the load. Do not rely on gripping force alone to keep a suspended part safe.
Prevent excessive external force, side load, impact and collision at the end of jaw or machine travel. Leave clearance around the workpiece and attachments throughout opening, transfer and reversal.
Keep custom fingers short and light. Align the workpiece with the jaw centerline, and make both contact surfaces engage together where the two-jaw arrangement is used. Do not use the gripper to force an off-center insertion.
Hold the jaw with an open-ended wrench when fastening an attachment; do not react the tightening torque through the gripper body. Use the specified screw length and torque to avoid internal damage.
Use a flow-control valve to limit opening and closing speed. Commission at reduced pressure and low speed, and verify there is no collision before normal operation.
Keep people and loose objects outside the moving envelope. Release the workpiece safely and exhaust the compressed air before removing the gripper.
For holding a workpiece using spring force alone, the catalog requires consultation with the manufacturer. The pneumatic force rating does not establish a spring-only safe holding load.
Optional magnetic sensors and matching cables
H-profile: CMSH — standard/A05 reed sensorsTwo-wire reed operation at 5–240 V AC/DC.CMSH-020, CMSH-030, CMSH-050, CMSH-100, CMSH-M08, CMSH-M08010, CMSH-M08020, CMSH-M08030, CMSH-M12, CMSH-M12010, CMSH-M12020, CMSH-M12030, A05-CMSH-020, A05-CMSH-030, A05-CMSH-050, A05-CMSH-100
H-profile: CMSH — high-temperature reed sensors (final -H suffix)Two-wire reed operation at 5–240 V AC/DC.CMSH-020-H, CMSH-030-H, CMSH-050-H, CMSH-100-H, CMSH-M08-H, CMSH-M08010-H, CMSH-M08020-H, CMSH-M08030-H, CMSH-M12-H, CMSH-M12010-H, CMSH-M12020-H, CMSH-M12030-H
H-profile: DMSH — two-wire electronic sensorsTwo-wire electronic operation at 10–28 V DC.DMSH-020, DMSH-030, DMSH-050, DMSH-100, DMSH-M08, DMSH-M08010, DMSH-M08020, DMSH-M08030, DMSH-M12, DMSH-M12010, DMSH-M12020, DMSH-M12030, DMSH-020-W, DMSH-030-W, DMSH-050-W, DMSH-100-W, A05-DMSH-020, A05-DMSH-030, A05-DMSH-050, A05-DMSH-100, A06-DMSH-020, A06-DMSH-030, A06-DMSH-050, A06-DMSH-100
H-profile: DMSH — NPN electronic sensorsNPN three-wire output with a 5–30 V DC supply.DMSH-N020, DMSH-N030, DMSH-N050, DMSH-N100, DMSH-NM08, DMSH-NM08010, DMSH-NM08020, DMSH-NM08030, DMSH-NM12, DMSH-NM12010, DMSH-NM12020, DMSH-NM12030, DMSH-N020-W, DMSH-N030-W, DMSH-N050-W, DMSH-N100-W
H-profile: DMSH — PNP electronic sensorsPNP three-wire output with a 5–30 V DC supply.DMSH-P020, DMSH-P030, DMSH-P050, DMSH-P100, DMSH-PM08, DMSH-PM08010, DMSH-PM08020, DMSH-PM08030, DMSH-PM12, DMSH-PM12010, DMSH-PM12020, DMSH-PM12030, DMSH-P020-W, DMSH-P030-W, DMSH-P050-W, DMSH-P100-W
H-profile: EMSH — miniature two-wire sensorsMiniature two-wire electronic operation at 10–28 V DC.EMSH-020, EMSH-030, EMSH-050, EMSH-100, EMSH-M08, EMSH-M08010, EMSH-M08020, EMSH-M08030, EMSH-M12, EMSH-M12010, EMSH-M12020, EMSH-M12030, EMSH-020-W, EMSH-030-W, EMSH-050-W, EMSH-100-W, EMSH-M08-W, EMSH-M08010-W, EMSH-M08020-W, EMSH-M08030-W, EMSH-M12-W, EMSH-M12010-W, EMSH-M12020-W, EMSH-M12030-W, A05-EMSH-020, A05-EMSH-030, A05-EMSH-050, A05-EMSH-100, A06-EMSH-020, A06-EMSH-030, A06-EMSH-050, A06-EMSH-100
G-profile: CMSG — standard/A05 reed sensorsTwo-wire reed operation at 5–240 V AC/DC.CMSG-020, CMSG-030, CMSG-050, CMSG-100, CMSG-M08, CMSG-M08010, CMSG-M08020, CMSG-M08030, CMSG-M12, CMSG-M12010, CMSG-M12020, CMSG-M12030, A05-CMSG-020, A05-CMSG-030, A05-CMSG-050, A05-CMSG-100
G-profile: CMSG — high-temperature reed sensors (final -H suffix)Two-wire reed operation at 5–240 V AC/DC.CMSG-020-H, CMSG-030-H, CMSG-050-H, CMSG-100-H, CMSG-M08-H, CMSG-M08010-H, CMSG-M08020-H, CMSG-M08030-H, CMSG-M12-H, CMSG-M12010-H, CMSG-M12020-H, CMSG-M12030-H
G-profile: DMSG — two-wire electronic sensorsTwo-wire electronic operation at 10–28 V DC.DMSG-020, DMSG-030, DMSG-050, DMSG-100, DMSG-M08, DMSG-M08010, DMSG-M08020, DMSG-M08030, DMSG-M12, DMSG-M12010, DMSG-M12020, DMSG-M12030, DMSG-020-W, DMSG-030-W, DMSG-050-W, DMSG-100-W, A05-DMSG-020, A05-DMSG-030, A05-DMSG-050, A05-DMSG-100, A06-DMSG-020, A06-DMSG-030, A06-DMSG-050, A06-DMSG-100
G-profile: DMSG — NPN electronic sensorsNPN three-wire output with a 5–30 V DC supply.DMSG-N020, DMSG-N030, DMSG-N050, DMSG-N100, DMSG-NM08, DMSG-NM08010, DMSG-NM08020, DMSG-NM08030, DMSG-NM12, DMSG-NM12010, DMSG-NM12020, DMSG-NM12030, DMSG-N020-W, DMSG-N030-W, DMSG-N050-W, DMSG-N100-W
G-profile: DMSG — PNP electronic sensorsPNP three-wire output with a 5–30 V DC supply.DMSG-P020, DMSG-P030, DMSG-P050, DMSG-P100, DMSG-PM08, DMSG-PM08010, DMSG-PM08020, DMSG-PM08030, DMSG-PM12, DMSG-PM12010, DMSG-PM12020, DMSG-PM12030, DMSG-P020-W, DMSG-P030-W, DMSG-P050-W, DMSG-P100-W
G-profile: EMSG — miniature two-wire sensorsMiniature two-wire electronic operation at 10–28 V DC.EMSG-020, EMSG-030, EMSG-050, EMSG-100, EMSG-M08, EMSG-M08010, EMSG-M08020, EMSG-M08030, EMSG-M12, EMSG-M12010, EMSG-M12020, EMSG-M12030, EMSG-020-W, EMSG-030-W, EMSG-050-W, EMSG-100-W, EMSG-M08-W, EMSG-M08010-W, EMSG-M08020-W, EMSG-M08030-W, EMSG-M12-W, EMSG-M12010-W, EMSG-M12020-W, EMSG-M12030-W, A05-EMSG-020, A05-EMSG-030, A05-EMSG-050, A05-EMSG-100, A06-EMSG-020, A06-EMSG-030, A06-EMSG-050, A06-EMSG-100
Two-wire mating cables (B)For a matching M8 or M12 two-wire male sensor; ordered separately.F-ECM08B020, F-ECM08B030, F-ECM08B050, F-ECM08B100, F-ECM12B020, F-ECM12B030, F-ECM12B050, F-ECM12B100
Three-wire mating cables (C)For a matching M8 or M12 NPN/PNP male sensor; ordered separately.F-ECM08C020, F-ECM08C030, F-ECM08C050, F-ECM08C100, F-ECM12C020, F-ECM12C030, F-ECM12C050, F-ECM12C100
The listed H- and G-profile options are alternatives, not a required set. Match the sensor to the corresponding body groove. A final -H on a CMS order code selects the high-temperature reed version, independently of the H/G mounting profile.
CMSH/CMSG reed sensors are limited to 100 mA, 10 W and 200 Hz, with no internal consumption or leakage. Standard/A05 voltage drop is at most 2.5 V at 100 mA DC; versions with the final -H suffix have no residual voltage or indicator LED.
Two-wire DMSH/DMSG and EMSH/EMSG require 2.5–100 mA loads, up to 2.8 W and 1,000 Hz. Maximum consumption, residual voltage and leakage are 3 mA, 3.5 V and 0.06 mA respectively.
NPN/PNP DMSH/DMSG outputs are rated to 30 V / 200 mA, 6 W and 1,000 Hz. Maximum consumption, residual voltage and leakage are 5 mA, 0.7 V and 0.01 mA respectively. Check controller input compatibility as well as load ratings.
Sensor and female-cable endings 020/030/050/100 mean 2/3/5/10 m. M08/M12 sensors have M8/M12 male connectors on 0.5 m leads; M08010/M08020/M08030 and M12010/M12020/M12030 give 1/2/3 m leads. Select lead length to suit the installation independently of gripper travel.
Match female cables to the male connector size and wire count; direct-lead sensors need none. B pinout: 1 brown (+), 4 blue (−), 3 unused. C pinout: 1 brown (+), 3 blue (−), 4 black output. Check the mating cable and connector ratings separately.
A05 flex-resistant robotics cable and A06 oil-resistant flex cable have a recommended minimum bend radius of 19 mm. Both are two-wire direct-lead types, without M8/M12, NPN/PNP or W options; A05-CMSH and A05-CMSG also exclude the final high-temperature -H suffix. W means waterproof: DMSH-W/DMSG-W have direct leads only; the listed EMSH-W/EMSG-W options also include connectors.
Sensor temperature limits are −10 to +70°C, or −10 to +125°C for CMSH/CMSG versions with the final -H suffix. The HFK-series gripper remains limited to +70°C. Ordinary, high-temperature and A05 sensors are IP64; W/A06 are IP68. These ratings do not extend to the gripper, connectors or whole assembly; use their common limits.
CMS has no protection circuit; DMS/EMS have reverse-polarity and surge protection, and EMS also has temperature-overload protection. Reed, two-wire electronic, NPN and PNP circuits are not interchangeable. Complete and insulate wiring before powering it; keep it separate from power/high-voltage wiring. For direct leads, connect brown and blue in series with the load on two-wire types; do not connect the switch alone across the supply. On three-wire types, brown is positive supply, blue is negative and black is output; connect an NPN load to positive and a PNP load to negative.
Install the selected H- or G-profile sensor in the matching sensor groove on the HFK-series body, using its included magnet; no separate sensor mounting bracket is required. Loosen the locking screw so it does not project below the sensor base. Slide the sensor to the required position, then tighten. Set detection at the actuation-range centre. Recommended sensor-screw torque is 0.15–0.20 N·m, never over 0.25 N·m; these are not gripper mounting torques. Prevent impacts; keep cables free of strain and avoid unnecessary movement or bending. Observe the stated bend-radius guidance for flex-resistant versions, and inspect fixings, cables and indication.
Keep ordinary sensors dry and do not immerse waterproof types for long periods. Avoid explosive gas, aggressive chemicals, sudden temperature changes, welding interference and magnetic debris. Provide suitable protection for A05 cables exposed to heat, dust, water or oil, and for A06 cables exposed to weld spatter.
Optional single-acting air connections and controls
HFTK is single acting: pressure drives jaw closing, and exhausting the working line allows spring opening. Use one working line. The optional direct-acting 3V1 valves are normally closed 3/2: energizing connects P to A; de-energizing blocks P and connects A to R. Normally closed describes the valve supply path, independently of whether the gripper rests open or closed. Select the 1.2 mm valve orifice, tube and installed line length for the required flow and response; these options do not establish achieved cycle frequency or spring-return time.
PC4M5: M5×0.8 male × 4 mm tube ODStraight connection at the M5 valve A port; at P only when the supply uses the same tube OD; also an alternative at the M5 gripper pressure port
PTL4M5B-M: M5×0.8 male × 4 mm tube OD; mini B-typeM5 gripper-port meter-in control for pneumatic jaw closing, instead of the straight fitting; free reverse exhaust for spring opening
US98A040025100MBU: polyester polyurethane; 4 mm OD × 2.5 mm ID; blue, 100 m rollOptional straight tubing example; cut to the required installed length
UE95A040025100MBU: polyether polyurethane; 4 mm OD × 2.5 mm ID; blue, 100 m rollOptional straight tubing example; cut to the required installed length
3V1M5A, 3V1M5AI: M5×0.8 female P supply, A work and R exhaust ports; normally closed 3/2220 V AC direction control; DIN connection / 0.5 m flying leads respectively
3V1M5B, 3V1M5BI: M5×0.8 female P supply, A work and R exhaust ports; normally closed 3/224 V DC direction control; DIN connection / 0.5 m flying leads respectively
3V1M5C, 3V1M5CI: M5×0.8 female P supply, A work and R exhaust ports; normally closed 3/2110 V AC direction control; DIN connection / 0.5 m flying leads respectively
3V1M5E, 3V1M5EI: M5×0.8 female P supply, A work and R exhaust ports; normally closed 3/224 V AC direction control; DIN connection / 0.5 m flying leads respectively
3V1M5F, 3V1M5FI: M5×0.8 female P supply, A work and R exhaust ports; normally closed 3/212 V DC direction control; DIN connection / 0.5 m flying leads respectively
BSLM5: M5×0.8 male sintered silencerOptional silencer at the selected 3V1 valve R exhaust port only; never at the gripper working port
For a selected 4 mm OD × 2.5 mm ID tube circuit, choose either PC4M5 or PTL4M5B-M at the M5×0.8 gripper pressure port. Use the straight fitting at the valve A port; use it at P only if the supply uses the same tube OD.
The mini B-type controller restricts tube-to-gripper supply for pneumatic jaw closing and allows free reverse exhaust for spring opening. This is meter-in control of one working line. The listed PC and PTL parts accept soft nylon or polyurethane tube at 0–1 MPa and −20 to +70°C. Seat M5 sealing gaskets correctly. The PTL recommended 0.05 N·m is cap-rotation torque, not thread-tightening torque; adjust gradually and secure the setting.
Use the selected branch at 0.25–0.7 MPa and −20 to +70°C, subject to temperature derating and any lower installed-component limit.
Select one complete valve code for the installed supply. In each voltage pair, the first code has a DIN connection and the code ending I has 0.5 m flying leads. AC tolerance is ±15%, DC tolerance ±10%; consumption is 4.5 VA at 220/110 V AC, 5.0 VA at 24 V AC, 3.0 W at 24 V DC or 2.5 W at 12 V DC. The valve is rated 0–0.8 MPa and −20 to +70°C, IP65 and insulation class B. Its 10 Hz no-load limit is not a loaded gripper-cycle rating.
BSLM5 is an optional silencer for the selected valve’s M5 R exhaust only, rated 0–1 MPa and −20 to +70°C. Keep the return exhaust path unobstructed: excess back pressure can prevent spring return. These are separately ordered component options; tube and thread compatibility do not establish a complete validated gripping system.
The blue 100 m tube codes are alternative packaging examples, not installed lengths. US98A polyester-PU is rated −20 to +70°C and UE95A polyether-PU −40 to +70°C; both are rated 1 MPa at 23°C. Minimum bend radii (US/UE) are 10/8 mm. Apply temperature derating and the lowest component limit.Estimated weight
1431.1 g. This is an estimated reference, not an AirTAC measured product or shipping weight. The dedicated series specification page gives 1437 g; the 2022 general weight table gives the 1431.1 g basic-model reference used here.
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