AirTAC Pneumatics
AirTAC Clamp Cylinder Arms & Adjustment Screws
Replacement clamping arms and adjustment screws for AirTAC JCK clamp cylinders in sizes 40, 50, 63 and 80 - 78 genuine parts for shops that repair and retool swing clamps.
inventory_278 models availableSeries Overview
Every part in this collection belongs to one cylinder series: the AirTAC JCK clamp cylinder. The 78 parts split into two types. The F-JCK-AM clamping arm is the piece that swings down onto the workpiece and takes the wear - 42 parts. The F-JCK-LM adjustment screw sets where the clamp stops, the clamping height and position - 36 parts.
Sizes follow the cylinder: 40, 50, 63 and 80. The size 40 group holds 15 parts; sizes 50, 63 and 80 hold 21 parts each. Prices run from $6.94 to $83.71 with a median of $37.19. The arms sit at the expensive end and the screws at the cheap end, which mirrors how the parts are used: a screw is a routine spare, while an arm is replaced when the contact face wears or the fixture changes - a legitimate repeat purchase.
Because the range is single-series, every code here is unambiguous: F-JCK40AM through F-JCK80AM for arms, F-JCK40LM through F-JCK80LM for screws. Material, thread and dimensions are confirmed per part number - send us the code and we confirm the details from the datasheet before you order.
Browse Models
Airtac F-JCK-LM Adjustment Screw F-JCK40X135LM
SKU: F-JCK40X135LM
$6.94$14.44
schedule Confirm lead time
Airtac F-JCK-LM Adjustment Screw F-JCK40X120LM
SKU: F-JCK40X120LM
$6.94$14.44
schedule Confirm lead time
Airtac F-JCK-LM Adjustment Screw F-JCK40X105LM
SKU: F-JCK40X105LM
$6.94$14.44
schedule Confirm lead time
Typical Applications
Fixture retooling on a machining centre
When a JCK clamp cylinder is re-dedicated to a new workpiece, the arm is the part that changes. A fresh F-JCK-AM clamping arm in the cylinder's size - 40, 50, 63 or 80 - brings the clamp point back to the new fixture without touching the cylinder itself.
Worn clamp arms on welding jigs
The arm is the contact point that takes every clamp cycle, so it is the natural wear item on a jig built around JCK cylinders. Keeping a spare arm per size in the tool crib turns a worn pad into a five-minute swap instead of a fixture shutdown.
Setting clamp height on an assembly station
The F-JCK-LM adjustment screw sets where the clamp stops, so it is the part used when clamp height has to be re-established after arm replacement or a changeover. It is also the inexpensive routine spare in this range, from $6.94.
Maintenance spares for multi-size clamp fleets
A plant running JCK cylinders in several sizes covers all of them from this one collection - 15 parts at size 40 and 21 parts each at 50, 63 and 80 - ordered by a single, self-explanatory code structure: F-JCK[size]AM or F-JCK[size]LM.
How to Choose the Right Model
Two decisions pick the part. First, the type: a clamping arm (F-JCK-AM) when the contact piece is worn or the fixture has changed, an adjustment screw (F-JCK-LM) when the clamp stop position needs setting or re-setting. Second, the size: it must match the JCK cylinder it mounts to - 40, 50, 63 or 80. A size 50 arm does not fit a size 63 cylinder, and arms from this series are not interchangeable with arms from other clamp cylinder series.
Before ordering, confirm five points: the cylinder size, the part type (AM or LM), the exact F-JCK part code, the quantity needed (listings are per piece), and the JCK variant the part serves - share the code and we verify fitment. If the real problem is a leaking clamp cylinder rather than a worn arm, step over to our AirTAC repair kits, which cover the seals. For stop-position parts on a different machine family - the HLQ/HLS slides - see the stroke adjustment ends collection; the function is related but the parts are not interchangeable.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and available mounting space
- ✓ Port / thread type (PT / NPT / G)
- ✓ Sensor / magnet option (-S)?
- ✓ Side load — consider a guided model
Frequently Asked Questions
It covers 78 accessory parts for one series only: the AirTAC JCK clamp cylinder. There are 42 clamping arms (F-JCK-AM) and 36 adjustment screws (F-JCK-LM) across sizes 40, 50, 63 and 80 - 15 parts at size 40 and 21 each at 50, 63 and 80. Prices run from $6.94 to $83.71, median $37.19; the arms are the expensive end, the screws the cheap end.
The clamping arm (F-JCK-AM) is the part that touches the workpiece - it wears and it changes when the fixture changes. The adjustment screw (F-JCK-LM) sets the clamping height and stop position. Pick the code matching your need, then match the size to your JCK cylinder: 40, 50, 63 or 80.
No. Each part is specific to its size, and a size 50 arm does not fit a size 63 JCK cylinder. The catalogue states no standard mounting interface for these parts, so specify them by AirTAC code - F-JCK[size]AM or F-JCK[size]LM - and send us the code if you want fitment confirmed against your cylinder variant.
Yes - AirtacDistr is an authorized export seller of genuine AirTAC parts, and every part here is a current accessory, none discontinued. All 78 parts are listed and orderable; lead time is confirmed on request, so send us your part codes and quantities for a firm quotation.
Authorized Export Seller
Genuine AirTAC parts produced by the AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote
Send us the model number, quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.