PHD GRS Series Manual

PART NO.: 6441-728A
1
REPAIR PROCEDURES: SERIES GRS DESIGN 2 [6] GRIPPERS
PHD, Inc. makes no warranty as to the fitness of its products or as to the length of service life after being repaired or parts replaced by anyone other than authorized
employees of PHD, Inc. In no event shall PHD, Inc. be liable for loss of profits, indirect, consequential, or incidental damages arising out of the use of PHD Products.
JAW COVER
ROD
JAW
JAW SEAL
BODY ASSEMBLY
PISTON
BORE PLUG
FIGURE 1
FIGURE 4
SIZE 19 ONLY
JAW COVER
ASSEMBLY FASTENERS
YELLOW SPRING
(OPTION -FSR2)
PISTON SEAL
PISTON ASSEMBLY
FASTENER
BLUE SPRING
(OPTION -FSE2)
BORE PLUG SEAL
BORE PLUG RETAINER
AIR FILTER
QTY 1 ON SIZE 40 & 50
QTY 2 ON SIZE 63
ROD SEAL
(SEE FIGURE 3)
CAM
DRIVER
TARGET PIN THREAD
ALIGN WITH TARGET SLOT
ALIGN SENSOR COVER WITH EDGE
(SIZE 25, 27, 28, 40, & 50)
PROX TARGET PIN
(OPTION CP ONLY)
OPTIONAL PROX
TARGET AND
SET SCREW
SENSOR
COVER MAGNET
TARGET
ASSEMBLY
MAGNET
TARGET PIN
REPLACES ROD,
PISTON, AND PISTON
ASSEMBLY FASTENER
FIGURE 5
GRS34-x-25 x 6.5 ONLY
BEARING PLUGS (DO NOT REMOVE
WHEN USING ORIGINAL JAWS)
LUBRICATE
JAW SLOT
JAW
FIGURE 2 APPROXIMATELY 0.04 in [1 mm]
SENSOR
COVER
MAGNET
TARGET PIN
MAGNET TARGET ASSEMBLY
TARGET SLOT
SENSOR
COVER SLOT
FIGURE 3
JAW DRIVER
BORE PLUG
BORE PLUG
RETAINER
PISTON
JAW DRIVER
COUNTERBORE
BORE PLUG SEAL
PISTON SEAL
ROD SEAL
NOTE ORIENTATION
WARNING: Units with -FSE2 and -FSR2
options contain compressed springs. For
complete disassembly procedures, see
the following page.
AVISO: Las unidades con opciones -FSE2
y -FSR2 contienen muelles comprimidos.
Véase procedimiento de desmontaje en
la página siguiente.
ATTENTION: Les modèles avec options
-FSE2 et -FSR2 contiennent des ressorts
comprimés. Voir page suivante pour la
procédure de désassemblage complète.
ACHTUNG: Einheiten mit der Option
-FSE2 und -FSR2 sind mit komprimierten
Federn ausgestattet. Zur Demontage bitte
die folgende Seite beachten!

PART NO.: 6441-728A
2
REPAIR PROCEDURES: SERIES GRS DESIGN 2 [6] GRIPPERS
PHD, Inc. makes no warranty as to the fitness of its products or as to the length of service life after being repaired or parts replaced by anyone other than authorized
employees of PHD, Inc. In no event shall PHD, Inc. be liable for loss of profits, indirect, consequential, or incidental damages arising out of the use of PHD Products.
DISASSEMBLY PROCEDURE
1) WARNING: All air pressure in the unit must be relieved prior to disassembly of gripper. -FSR2 and -FSE2 units contain springs under
compression. A means of retaining the plug (-FSE2 units) or piston (-FSR2 units) must be provided during disassembly to prevent
ejection of these components from the gripper.
2) During disassembly, be careful to avoid scratching bearing or sealing areas. Refer to Figures 1 and 3 unless otherwise noted.
3) -CP units: Remove proximity target (if attached) and prox target pin from jaw (CP proximity sensor ready option only).
4) Remove sensor cover (cannot be reused). Pulling straight out from gripper to prevent bending or breaking magnet target pin, use pliers
to remove magnet target assembly (cannot be reused), see Figure 2. Remove magnet target pin using 0.0605 in [1.5 mm] hex wrench.
5) Standard units: Remove bore plug retainer, bore plug, plug seal, and piston assembly fastener. Size 19 only, remove one-piece piston
and rod. (See Figure 4)
-FSR2 units: Remove bore plug retainer, bore plug, and plug seal. Restrain piston and slowly remove piston assembly fastener. Relieve
spring force by slowly releasing piston. Remove piston and spring from bore. (See Figure 6)
-FSE2 units: Restrain bore plug and carefully remove retaining ring. Relieve spring force by slowly releasing plug. Remove spring and
bore plug seal. Remove piston assembly fastener. (See Figure 7)
6) Remove jaw cover assembly fasteners retaining jaw cover. Remove air filter or filters from size 40, 50, and 63 units.
7) Move jaws to closed position and lift jaws, jaw seals and jaw driver from body of gripper. Note location of jaw seals, if included.
8) Push rod through body to gain access to piston and piston seal (standard and -FSE2 units). Remove piston seal, taking care to avoid
scratching sealing surface of seal groove in piston. Remove rod seal, note orientation of seal.
9) Clean and inspect all components. WARNING: Worn or damaged components should be replaced.
REASSEMBLY PROCEDURE
1) Be careful to avoid damaging seals during reassembly.
2) Lubrication guidelines (only use lubricants which are compatible with pneumatic devices)
• Standard Units: all components use petroleum-based high-pressure grease, oil wicks: petroleum-based heavy weight oil with Teflon
• -Y4 and -V6 Units: all components use cleanroom designated grease, oil wicks: cleanroom designated heavy weight oil
• -V1 Units: all components use PTFE based lubricant, oil wicks: PTFE based heavy weight oil
3) Use removable threadlocker on all threaded fasteners.
4) Lubricate bore, rod seal groove, and jaw slots in body. Apply lubricant on outside surfaces of cam driver and jaws, avoiding threaded
holes. Lubricate jaw seals, if included. Lubricate jaw contact area on jaw cover. Lubricate and install rod seal, see Figure 3 for orientation.
5) Size 19 piston and rod (Figure 4): Replace and lubricate piston seal on one-piece piston and rod. Install in body, threaded end should be
visible in jaw slot. Apply threadlocker to threaded end.
6) Size 25-63 pistons and rods, except sizes 40, 50, and 63 with -FSR2 (see below): Lubricate rod and install in body with narrowed
section visible in jaw slot. (See Figure 3)
7) Size 19 jaws and cover: Lubricate jaw contact area on cover. Install cam driver into one jaw. Place jaw and cam driver into slot in
jaw cover. Install remaining jaw into other slot in cover. NOTE: Jaws may need to be angled when inserting in cover slot. Verify that
counterbore in cam driver (see Figure 3) is oriented to accept rod when assembled into body. Install jaws, cam driver, and cover
assembly into jaw slot while threading one-piece piston and rod into cam driver (see Figure 4). Torque piston per TABLE 1.
DRIVER
PISTON
SPRING
PISTON
PISTON
ASSEMBLY
FASTENER
PISTON ROD
SIZES 40, 50, & 63
PISTON ASSEMBLY FASTENER
(ROD THREADS DIRECTLY INTO
DRIVER ON SIZES 40, 50, & 63)
FIGURE 6
-FSR2 FIGURE 7 -FSE2

PART NO.: 6441-728A
3
REPAIR PROCEDURES: SERIES GRS DESIGN 2 [6] GRIPPERS
PHD, Inc. makes no warranty as to the fitness of its products or as to the length of service life after being repaired or parts replaced by anyone other than authorized
employees of PHD, Inc. In no event shall PHD, Inc. be liable for loss of profits, indirect, consequential, or incidental damages arising out of the use of PHD Products.
TABLE 1 - GRIPPER ASSEMBLY TORQUES
PART DESCRIPTION SIZE 19 SIZE 25 SIZE 27 SIZE 28 SIZE 32 SIZE 40 SIZE 50 SIZE 63
in-lb Nm in-lb Nm in-lb Nm in-lb Nm in-lb Nm in-lb Nm in-lb Nm in-lb Nm
JAW COVER
ASSEMBLY FASTENER 7 0.8 9 1.0 17 1.9 17 1.9 25 2.8 40 4.5 85 9.6 210 24
PISTON ASSEMBLY
FASTENER 15 1.7 17 1.9 17 1.9 17 1.9 25 2.8 75 8.5 85 9.6 210 24
MAGNET TARGET PIN
(STD UNIT) 20 in-oz 0.14 20 in-oz 0.14 20 in-oz 0.14 20 in-oz 0.14 20 in-oz 0.14 20 in-oz 0.14 20 in-oz 0.14 20 in-oz 0.14
PROX TARGET PIN
(CP OPTION ONLY) 40 in-oz 0.28 40 in-oz 0.28 40 in-oz 0.28 40 in-oz 0.28 40 in-oz 0.28 40 in-oz 0.28 9 1.0 9 1.0
8) Size 25-63 jaws: Assemble both jaws to jaw driver and move jaws to closed position. Verify that counterbore in jaw driver (see Figure 3)
is oriented to accept rod when assembled. Assemble jaw seals to jaws, when included. Note jaw orientation per Figure 1. Align jaw and
driver assembly with jaw slot. Slide jaw seals, when included, in line with jaw seal slots. Slide assembly down into jaw slot. Verify that
jaw seals are properly located in slot by checking that no gap exists between jaw and jaw slot.
9) Size 40, 50, and 63 with -FSR2 jaws (Figure 6): Apply threadlocker to male thread at end of piston rod and assemble into cam driver.
Assemble both jaws to jaw driver and move jaws to closed position. Assemble jaw seals to jaws. Note jaw orientation per Figure 1. Align
jaw, piston rod, and driver assembly with jaw slot. Align jaw seal slots with slots in body. Slide assembly down into jaw slot. Verify that
jaw seals are properly located in slot by checking that no gap exists between jaw and jaw slot.
10) Install air filters on size 40, 50, and 63 units.
11) Size 25-63 jaw cover: Care must be taken to align cover with jaw seals, when included. Verify that jaw seals are properly located in cover
by checking that no gap exists between jaw and jaw cover (prior to applying torque to cover fasteners). Apply removable threadlocker
sparingly to jaw cover assembly fasteners and install in body. Torque jaw cover assembly fasteners per TABLE 1.
12) Replace and lubricate piston seal.
13) Size 25-63 piston standard and -FSE2: Insert piston with seal into body of gripper, see Figures 3 and 7 for orientation.
Apply removable threadlocker to piston assembly fastener and assemble through piston and rod into jaw driver. Torque
piston assembly fastener per TABLE 1.
14) Size 25-63 piston with -FSR2: Lubricate and insert spring as shown in Figure 6. Apply removable threadlocker to piston assembly
fastener and assemble through piston and rod into jaw driver or piston rod (sizes 40, 50, and 63). Pressure may need to be applied to
piston to compress spring in units with -FSR2 option. Torque piston assembly fastener per TABLE 1.
15) -FSE2 spring: Lubricate and insert spring as shown in Figure 7.
16) Bore plug, seal, and retainer standard and -FSR2: Lubricate and install bore plug seal, see Figure 3 for orientation. NOTE: Plug seal
may require stretching prior to installation to allow proper assembly of bore plug. Size 19 plug seal installs into groove in piston. Install
bore plug retainer into body (sharp edges of retaining ring outward from body). Verify proper seating of retaining ring.
17) Bore plug, seal, retainer, and spring with -FSE2: Lubricate and install bore plug seal, see Figure 3 for orientation. NOTE: Plug seal may
require stretching prior to installation to allow proper assembly of bore plug. Center bore plug on spring. Compress spring by applying
pressure to center of bore plug. When compressing, verify proper seating of bore plug into body. While maintaining pressure, install bore
plug retainer into body (sharp edges of retaining ring outward from body). Verify proper seating of retaining ring.
18) Standard unit without -CP option: Apply removable threadlocker sparingly to thread on magnet target pin and install through target slot
in body into jaw (see Figure 2). Torque magnet target pin in jaw per TABLE 1.
19) Press magnet target assembly onto magnet target pin as shown in Figure 2 until target is approximately 0.040 in [1 mm] below sensor
slot surface.
20) Clean sensor slot surface (see Figure 2) to remove any grease or dirt. Carefully remove backing from aluminum sensor cover.
(WARNING: if cover becomes bent it will not adhere or seal properly.) Install sensor cover onto sensor slot surface with cover aligned
with edge as shown (size 19, 25, 27, 28, 40, and 50 per Figure 1). Center sensor cover over magnet target slot on size 32 and 63 and
install onto sensor slot cover surface. Press firmly along length of cover to remove air.
21) CP option: Apply removable threadlocker sparingly to prox target pin and install through body into jaw. Torque the prox target pin in jaw
per TABLE 1. For prox target mounting instructions see 6441-725.
22) GRF34-x-25 x 6.5 only: When installing replacement jaws, apply removable threadlocker to bearing plugs on size 25. Install bearing
plugs in body. See Figure 5 for orientation. Apply air to unit and cycle at 30 psi [2.1 bar] while tightening bearing plugs. Tighten plugs
until unit stops cycling, back-off screw until unit cycles freely. Allow threadlocker to cure before use of unit.