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BH-40 User Manual

The user manual for the BH-40 explains how to maintain and operate your ball head. It also outlines key features and specifications.

BH-40FRONT-PAGE

Thank you for choosing a Really Right Stuff BH-40 Ball head. It is the culmination of years of development based on first-hand experience and abundant input from seasoned professionals. Please review this manual to see how you can get the most from your BH-40.

Specifications: BH-40 LR

Load Capacity 18 pounds (8kg)
Ball Articulation ±40-45º, 2x90º notch
Tension Adjustment Independent
Panning Base

2.5º increments, zero to 360º

Height (top of clamp jaw) 3.0” (77mm)
Tripod Mount Stainless Steel 3/8”-16
Base Diameter 2.1” (53mm)
Ball Diameter 1.6” (40mm)
Weight w/ B2-40 LR Clamp 17.4 ounces (494g)
Optional Platform and Stud

1½” platform and ¼” stud

Main Lock T-Lever Spring loaded & repositionable
Clamp Options B2-40 LR, B2-mAS, B2 AS II, B2-Pro II, or PCL-1

BH-40-features

Key Features

1. Pan Lock Knob — Our exclusive drum and band panning brake locks with an ergonomic scalloped knob. Conveniently shaped with detents, you can easily apply enough force to unscrew the ballhead by hand without the panning base slipping.

2. 40mm Ball — The 40mm ball is hollow for reduced weight, and its shape and finish allow for smooth and precise movement.

3. Quick-Release Clamps — Really Right Stuff quick-release clamps feature the option of screw-knob or lever-release styles. We offer many sizes, from mini clamps to extra long clamps. Though any of our quick-release clamps can be installed onto the ballhead, the B2-40 LR and B2-Pro II clamps are the best choices.

4. Main Lock T-Lever — Our ergonomic T-lever is designed for easy locking of the ball. It is springloaded so it can be pulled out and repositioned to clear your tripod platform.

5. Drop Notch — Single drop notch positioned for flexibility when tilting the camera into vertical aspect or at steep downward or upward angles.

6. Body — The CNC machined body serves as both the structure and the clamping mechanism of the ballhead. This is furnished by a unique split body design, which is robust, lightweight and sealed to prevent dust contamination. Finished with satin black anodizing, it can withstand abrasion and corrosion while looking beautiful.

7. Engraved Pan Base — The pan base is laser engraved in 2.5º increments from ±0º-90º-0º. Located on the main body just below the drop notch is an index mark for tracking progressive panning, used in multi-shot panoramic photography.

8. Drag Set Knob — Use this knob to add tension on the ball and prevent the camera from dropping when the Main Lock T-Lever is loosened. Control is independent from the Main Lock Knob to ensure logical operation and absolute reliability in the field.


 

Maintenance

General Care

The BH-40 is finished with a protective anodize plating that protects the aluminum from corrosion and mild abrasion. It will not protect it from scraping against or dropping on rocks/concrete/etc.

The BH-40 comes packed in our protective LB-40 Cordura Pouch. Keep the BH-40 in this pouch whenever practical. When transporting your tripod, cover ballhead with the pouch and tighten the drawstring around the bottom to keep it in place.

Cleaning

Take whatever precautions you can to prevent your BH-40 from getting fouled in mud, dirt, or sand. A good habit is to keep a plastic bag with your camera gear to quickly cover your camera and ballhead if you get caught in a rain/sandstorm. If the BH-40 is fouled, dry dust and dirt can be blown off and/or wiped off with a soft cloth. Mud or salt water should be lightly rinsed off with fresh water and then thoroughly dried. Do NOT submerge the ballhead when washing and do not direct a high-pressure stream of water at the ballhead.

All the knobs are captive, meaning they cannot come off without damaging them so do not attempt to remove the knobs. If fine sand/grit fouls the knob, simply run a gentle stream of water around the knob while rotating it one-half turn back and forth.

Break-In

The ballhead is tuned to maximize holding capacity and deliver super-fast lockup. If you like to work with a fully loose ball with no pre-set tension, the ballhead is ideal for you “out of the box”. However, those who like to operate the ballhead with a given amount of drag may find that articulating a pre-tensioned ballhead is not as silky smooth as desired. Keep in mind, after using the head for a period of time there will be some noticeable softening of the action. Customers have been known to lubricate their ballhead for increased fluidity of motion, however we do not recommend this.

No Lubrication Needed

The BH-40 is lubricated at the factory and parts that require lubrication are sealed. NO LUBRICATION IS REQUIRED BY THE USER. Especially DO NOT LUBRICATE THE BALL as this will decrease the lock-up capacity and tend to attract dirt/dust. Just keep the ball free from contamination to maintain smooth action.

 


Artboard 1-Feb-05-2026-06-02-17-8092-PM


Operation

Attach the BH-40 to Tripod

1. Tighten the Pan Lock Knob to lock the Panning Base with light to medium torque.

NOTE: Over-cranking the Pan Lock Knob may result in unwanted drag on the ball.

2. Screw the ballhead onto the 3/8”-16 threaded stud on the top of the tripod (stud should not protrude more than 3/8” above platform or 5-6 threads). Tighten the ballhead onto the tripod snugly, but do not over-torque or it will be difficult to remove.

attach-bh-40-to-tripod

Set Up Your Tripod

Set up your tripod to match the required camera position.

Orient the Ballhead

Loosen the Pan Lock Knob and rotate the body of the BH-40 ballhead as shown, so you may operate the Main Lock T-Lever with your left hand while your right hand is free to operate the camera controls. This orientation allows you to easily tilt the camera body over from horizontal to vertical using the drop notch.

bh-40-rear-facing-clamp

Adjust the Drag Set

Some photographers prefer to have tension (drag) on the ball at all times to prevent the camera from suddenly flopping when the Main Lock T-Lever is loosened. The optimal amount of drag depends on the size and shape of equipment being used as well as the angles at which you wish to place the equipment (steeper angles require a higher drag setting).

To set the drag, either remove your camera or hold it in place.

  1. Loosen the Main Lock T-Lever and Drag Set Knob.

  2. Tighten the Main Lock T-Lever to your preferred amount of resistance.

  3. Turn the Drag Set Knob until it stops.

Your Drag is now set and will remain at the same resistance until the Drag Set Knob is adjusted again.

Note: It is easy to forget that you set the drag and then try to loosen the Main Lock T-Lever with no apparent affect on the operation of the ball. If this happens to you, please check the drag setting first and do not over-loosen the Main Lock T-Lever.

Tighten the Main Lock Knob (optional) and expose image.

We recommend that you tighten the Main Lock T-Lever before exposing an image. However, many photographers simply rely on the Drag Setting and do not fully lock the Ball using the Main Lock T-Lever. This is fine for many situations depending on your equipment and how high the drag setting is. If using a long telephoto at slow shutter speeds, it is best to tighten the Main Lock T-Lever before exposing your shot. Conversely, you may want to leave the drag setting loose and only use the Main Lock T-Lever to control both drag and lock. Experiment and see what works best for you.

 

Using the Drop Notch

1. Loosen the Pan Lock Knob and rotate the body so one drop notch is facing forward.

bh-40-drop-notch-turn

2. Fully seat clamp into the drop notch.

bh-40-drop-notch

As you adopt a procedure that works for you, it’s best to practice that working mode consistently until it becomes second nature. This will save you time in the field and help avoid costly mistakes. Seasoned pros are able to setup and shoot literally within seconds.

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