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Pull-Down Clamps

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Pull-Down Clamps (PDF 555.00 KB)

Specifications

Pull Down Clamps

Specifications

For proper sealing, mating surface must be flat within 0.003 in.
with a maximum 63 µin R_a surface finish.

Model No.	Plumbing Style	Lateral Clamping Force (lb.)*	Pull Down Force (lb.)*	Effective Horizontal Stroke (in.)	Oil Capacity (cu. in.)	Piston Area (sq. in.)	Recommended Mounting Bolts (not supplied)	Mounting Bolts Max. Torque (ft. lb.)
Specifications
Single Acting (S/A) Cylinders, actuated hydraulically 1 direction, spring returned.
15-3105-00	Manifold & SAE Ported	870	290	0.20	0.03	0.175	5/16	18
15-3110-00	Manifold & SAE Ported	3900	1300	0.31	0.24	0.761	7/16	63
15-3112-00	Manifold & SAE Ported	6300	2100	0.39	0.49	1.247	5/8	150

* Cylinder capacities are listed at 5,000 psi maximum operating pressure. The output force is adjustable by varying the hydraulic system pressure. (Actual force may vary slightly due to friction loss, seal and wiper drag, and/or return springs.)

Features

Pull-Down Clamps

Single Acting

Three capacities available
Use when lateral clamping is desired
Generates straight clamping motion and force along with pull-down clamping force
Pull-down force is approximately 1/3 of the straight clamping force
This clamp is shipped with the jaw shown. Interchangeable jaws can be purchased for use with this clamp.
Counter hold devices to pull the work piece down when straight clamping force
is applied.

Available with both manifold mounting and SAE porting.

The straight and pull-down movements are independent of each other.

Dimensions

Pull Down Clamps

Dimensions

For proper sealing, mating surface must be flat within 0.003 in.
with a maximum 63 µin R_a surface finish.

Model No.	A	B	C	D	E	F*	G	H	J	K	L
Dimensions
Single Acting (S/A) Cylinders, Actuated Hydraulically 1 Direction, Spring Returned
15-3105-00	3.94	1.18	1.18	1.50	1.54	0.08	SAE 2	0.33	0.12	2.09	2.32
15-3110-00	5.31	1.97	1.97	2.24	2.28	0.12	SAE 4	0.49	0.55	2.64	2.91
15-3112-00	5.89	2.56	2.56	2.46	2.50	0.12	SAE 4	0.65	0.67	2.83	3.27

Model No.	M	N	P	Q	R	S	T	V	W	X	Y
Single Acting (S/A) Cylinders, Actuated Hydraulically 1 Direction, Spring Returned
15-3105-00	0.43	0.87	0.59	0.75	0.20	M5 X .24 DP	N/A**	0.51	15	N/A	N/A
15-3110-00	0.71	1.42	0.98	0.98	0.31	M8 X .47 DP	M5	0.55	30	0.229	1.103
15-3112-00	0.93	1.85	1.19	1.19	0.39	M10 X .63 DP	M5	0.69	30	0.225	1.263

Note:
*VERTICAL TRAVEL SHOULD BE RESTRICTED SO THAT STROKE "F" CAN NOT BE EXCEEDED.
** PLUG NOT AVAILABLE. USE O-RING TO SEAL MANIFOLD PORT IF "G" CLAMP PORT IS BEING USED.

Part Number	Description
O-ring Supplied (1 each)
39-0510-43	o-ring for 15-3105-00
39-0510-44	o-ring for 15-3110-00 and 15-3112-00

For manifold mounting of the 15-3110-00 and 15-3112-00, and for all mounting of the 15-3105-00, the mating surface should be flat to .003" with a maximum RA63 surface finish.

Counter Hold

Pull Down Clamps

Pull Down Counter Hold

Complement the pull-down clamp by pulling the workpiece down when straight clamping force is applied
Clamping bolt is behind the jaw, keeps clamping jaw from raising

Model No.	Description	Pull Down, Force	Recommended Mounting Bolts (not supplied)
Specifications
Mechanically Actuated
15-3105-02	Mechanical Counter Hold for 15-3105-00	290	5/16
15-3110-02	Mechanical Counter Hold, for 15-3110-00	1300	7/16
15-3112-02	Mechanical Counter Hold for 15-3112-00	2100	5/8

Model No.	A	B	C	D	E	F	G	H	J	K
Dimensions
15-3105-02	3.11	1.18	1.18	1.61	1.65	0.08	1.02	0.12	0.33 thru 0.55 C'bore x 0.31 deep	N/A
15-3110-02	4.02	1.97	1.97	2.32	2.36	0.12	1.18	0.55	0.49 thru 0.78 C'bore x0 .51 deep	1.10 C'bore x 0.24 deep
15-3112-02	4.49	2.56	2.56	2.40	2.44	0.12	1.46	0.67	0.65 thru 1.00 C'bore x 0.71 deep	1.26 C'bore x 0.24 deep

Note: The maximum pull-down stroke of the jaw must not exceed Dimension "F".

Call factory for CAD files.

Pull Down Jaws

Pull Down Clamping Jaws

Serrated, for holding normal surfaces.
Smooth, not hardened to facilitate shaping into any clamping form or ground
flush for sensitive work.
Clamping nose, for holding hard or uneven work pieces.
Hardened and tempered steel (except smooth jaws)

Special jaws are available in the configurations illustrated here (nominal extra cost). These configurations fit most special applications nearly eliminating the need for high cost, specific application special orders

Jaw Model No.	Clamp Model No.	A	B	C	D	E	F	G	H	J
Dimensions
Serrated Clamping Jaws
15-3105-03	15-3105-0X	0.24	1.16	1.16	0.10	0.87	0.12	-	-	15°
15-3110-03	15-3110-0X	0.39	1.97	1.97	0.12	1.24	0.55	-	-	30°
15-3112-03	15-3112-0X	0.39	2.56	2.56	0.12	1.46	0.67	-	-	30°
Smooth Clamping Jaws
15-3105-04	15-3105-0X	0.24	1.16	1.16	0.11	1.26	-	-	-	-
15-3110-04	15-3110-0X	0.39	1.97	1.97	0.12	1.63	-	-	-	-
15-3112-04	15-3112-0X	0.39	2.56	2.56	0.12	2.05	-	-	-	-
Nose Clamp Jaw
15-3105-05	15-3105-0X	0.24	1.16	1.16	0.11	1.06	0.12	12 RAD	0.20	15°
15-3110-05	15-3110-0X	0.39	1.97	1.97	0.12	1.56	0.55	8 RAD	0.32	30°
15-3112-05	15-3112-0X	0.39	2.56	2.56	0.12	1.85	0.67	12 RAD	0.39	30°

SpecificationsFeaturesDimensionsCounter HoldPull Down Jaws

Pull Down Clamps

Specifications

For proper sealing, mating surface must be flat within 0.003 in.
with a maximum 63 µin R_a surface finish.

Model No.	Plumbing Style	Lateral Clamping Force (lb.)*	Pull Down Force (lb.)*	Effective Horizontal Stroke (in.)	Oil Capacity (cu. in.)	Piston Area (sq. in.)	Recommended Mounting Bolts (not supplied)	Mounting Bolts Max. Torque (ft. lb.)
Specifications
Single Acting (S/A) Cylinders, actuated hydraulically 1 direction, spring returned.
15-3105-00	Manifold & SAE Ported	870	290	0.20	0.03	0.175	5/16	18
15-3110-00	Manifold & SAE Ported	3900	1300	0.31	0.24	0.761	7/16	63
15-3112-00	Manifold & SAE Ported	6300	2100	0.39	0.49	1.247	5/8	150

Pull Down Clamps

Dimensions

For proper sealing, mating surface must be flat within 0.003 in.
with a maximum 63 µin R_a surface finish.

Model No.	A	B	C	D	E	F*	G	H	J	K	L
Dimensions
Single Acting (S/A) Cylinders, Actuated Hydraulically 1 Direction, Spring Returned
15-3105-00	3.94	1.18	1.18	1.50	1.54	0.08	SAE 2	0.33	0.12	2.09	2.32
15-3110-00	5.31	1.97	1.97	2.24	2.28	0.12	SAE 4	0.49	0.55	2.64	2.91
15-3112-00	5.89	2.56	2.56	2.46	2.50	0.12	SAE 4	0.65	0.67	2.83	3.27

Model No.	M	N	P	Q	R	S	T	V	W	X	Y
Single Acting (S/A) Cylinders, Actuated Hydraulically 1 Direction, Spring Returned
15-3105-00	0.43	0.87	0.59	0.75	0.20	M5 X .24 DP	N/A**	0.51	15	N/A	N/A
15-3110-00	0.71	1.42	0.98	0.98	0.31	M8 X .47 DP	M5	0.55	30	0.229	1.103
15-3112-00	0.93	1.85	1.19	1.19	0.39	M10 X .63 DP	M5	0.69	30	0.225	1.263

Note:
*VERTICAL TRAVEL SHOULD BE RESTRICTED SO THAT STROKE "F" CAN NOT BE EXCEEDED.
** PLUG NOT AVAILABLE. USE O-RING TO SEAL MANIFOLD PORT IF "G" CLAMP PORT IS BEING USED.

Part Number	Description
O-ring Supplied (1 each)
39-0510-43	o-ring for 15-3105-00
39-0510-44	o-ring for 15-3110-00 and 15-3112-00

For manifold mounting of the 15-3110-00 and 15-3112-00, and for all mounting of the 15-3105-00, the mating surface should be flat to .003" with a maximum RA63 surface finish.

Pull Down Clamps

Pull Down Counter Hold

Complement the pull-down clamp by pulling the workpiece down when straight clamping force is applied
Clamping bolt is behind the jaw, keeps clamping jaw from raising

Model No.	Description	Pull Down, Force	Recommended Mounting Bolts (not supplied)
Specifications
Mechanically Actuated
15-3105-02	Mechanical Counter Hold for 15-3105-00	290	5/16
15-3110-02	Mechanical Counter Hold, for 15-3110-00	1300	7/16
15-3112-02	Mechanical Counter Hold for 15-3112-00	2100	5/8

Model No.	A	B	C	D	E	F	G	H	J	K
Dimensions
15-3105-02	3.11	1.18	1.18	1.61	1.65	0.08	1.02	0.12	0.33 thru 0.55 C'bore x 0.31 deep	N/A
15-3110-02	4.02	1.97	1.97	2.32	2.36	0.12	1.18	0.55	0.49 thru 0.78 C'bore x0 .51 deep	1.10 C'bore x 0.24 deep
15-3112-02	4.49	2.56	2.56	2.40	2.44	0.12	1.46	0.67	0.65 thru 1.00 C'bore x 0.71 deep	1.26 C'bore x 0.24 deep

Note: The maximum pull-down stroke of the jaw must not exceed Dimension "F".

Call factory for CAD files.

Pull Down Clamping Jaws

Serrated, for holding normal surfaces.
Smooth, not hardened to facilitate shaping into any clamping form or ground
flush for sensitive work.
Clamping nose, for holding hard or uneven work pieces.
Hardened and tempered steel (except smooth jaws)

Jaw Model No.	Clamp Model No.	A	B	C	D	E	F	G	H	J
Dimensions
Serrated Clamping Jaws
15-3105-03	15-3105-0X	0.24	1.16	1.16	0.10	0.87	0.12	-	-	15°
15-3110-03	15-3110-0X	0.39	1.97	1.97	0.12	1.24	0.55	-	-	30°
15-3112-03	15-3112-0X	0.39	2.56	2.56	0.12	1.46	0.67	-	-	30°
Smooth Clamping Jaws
15-3105-04	15-3105-0X	0.24	1.16	1.16	0.11	1.26	-	-	-	-
15-3110-04	15-3110-0X	0.39	1.97	1.97	0.12	1.63	-	-	-	-
15-3112-04	15-3112-0X	0.39	2.56	2.56	0.12	2.05	-	-	-	-
Nose Clamp Jaw
15-3105-05	15-3105-0X	0.24	1.16	1.16	0.11	1.06	0.12	12 RAD	0.20	15°
15-3110-05	15-3110-0X	0.39	1.97	1.97	0.12	1.56	0.55	8 RAD	0.32	30°
15-3112-05	15-3112-0X	0.39	2.56	2.56	0.12	1.85	0.67	12 RAD	0.39	30°

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Pull-Down Clamps

Pull Down Clamps

For proper sealing, mating surface must be flat within 0.003 in. with a maximum 63 µin Ra surface finish.

Pull-Down Clamps

Pull Down Clamps

For proper sealing, mating surface must be flat within 0.003 in. with a maximum 63 µin Ra surface finish.

Pull Down Clamps

Pull Down Clamping Jaws

For proper sealing, mating surface must be flat within 0.003 in.
with a maximum 63 µin R_a surface finish.

For proper sealing, mating surface must be flat within 0.003 in.
with a maximum 63 µin R_a surface finish.