HEM27 Counterweight Bar

Name: HEM27 Counterweight Bar
Brand: iOptron
SKU: 8456SL
Price: 27 USD
Availability: InStock
Rating: 5.0 (5 reviews)

$27 ~~$45~~ In stock

Category: Mount Accessories

Description

This counterweight bar fits a HEM27 mount. It is also the original CW bar for a CEM26/GEM28 mount.

Dimensions:

Diameter: 20mm
Length: 200mm
Length include thread and safety locking screw: 224mm
Thread Size: M16-2mm (both ends)
Safety Locking Screw included

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Kevin ★★★★★ Oct 21, 2026

The 200mm length is perfect for balancing my small refractor without taking up too much space. Threads are clean and the locking screw gives me peace of mind during long exposures.

Claire ★★★★★ Oct 20, 2026

The included safety locking screw feels really secure once tightened, which gives me peace of mind during long imaging sessions. It’s a compact 200mm length so it doesn’t hit the tripod legs like my old bar did.

Avery ★★★★★ Oct 19, 2026

The 20mm diameter is a perfect fit for my mount, and the 200mm length gives me just the right amount of weight for balancing. The safety locking screw adds a nice layer of security I wasn't expecting.